Notes:
You might want starch for a few of these!
Which earring findings and where/how you attach them is up to you...fishooks would work fine.
Each pair uses different materials, so the required items (for a pair) are listed at the beginning of each pattern. Generalities of what you need (beside the usual scissors and needle to weave in ends): Small amounts of #10 (bedspread weight) cotton thread, beads, and sizes 6 and 12 (US) steel hooks.

Abbreviations:
Ch = chain
Sc = single crochet
Sl st = slip stitch
St(s) = stitch(es)
Hdc = half double crochet
Dc = double crochet
Lp = loop
Hk = hook
Beg = beginning
Sc dec = single crochet decrease: insert hook into next st, yo, pull up loop, insert hook into following st, yo, pull up loop, yo, pull through all 3 loops on hook.
Bhdc = beaded half double crochet: yo, insert hook in stitch, pull up loop, bringing bead close to stitches, yo past the bead, pull through all 3 loops on hook.
Bdc = beaded double crochet: yo, insert hook in stitch, yo, pull through, yo, pull through 2, pull bead up to loop, yo past bead, pull through two.
Lbdc = low beaded double crochet: yo, insert hook, yo, pull through, pull up bead, yo past bead, pull through 2, yo, pull through 2.

Ovalicious Earrings (white pair):

Materials:
Small amount #10 (bedspread weight) white cotton thread
US #6 and 12 steel hooks (1.8 and 1.0mm)
20 translucent silver-lined 8/0 rocaille/E beads. Holes must be large enough to accommodate the first half inch of your #12 (1.0mm) steel hook with relative ease.

Instructions:

String beads. Using #6 hook, Ch 20 loosely, join to form a loop (being careful not to twist chain).

Row 1: Ch 1. Sc in back loop (furthest loop from you of the two top loops that make a single chain) of each ch around, end with sl st in first sc.

Row 2: Ch 1, sc in same space. *Ch 3, sc in next sc. Ch 3, slip bead onto ch-3 by bringing bead up to loop, removing current hook, slipping #12 hook through the bead and catching hold of the loop, and pulling the bead on to chain. Switch to #6 hook. Sc into next sc. Repeat from * around, ending with a sl st in the beg sc. Tie off, weave in ends.

Dizzy Dangle Earrings (darker purple pair):

Materials:
Small amount #10 (bedspread weight) purple cotton thread
US #6 and 12 steel hooks (1.8 and 1.0mm)
4 light blue oval cats eyes beads
8 light green 4mm round cats eyes beads

Instructions:

String beads... green-blue-green-green-blue-green (or whatever colors you chose).

With #6 hk: Ch 6, join to form a loop.

Row 1: Ch 1, work 8 sc in loop. Join with a sl st in first sc.

Row 2: Ch 1, sc in same space. (Ch 5, sc in next sc) 7 times. Ch 5, sl st in beg sc.

Row 3: Ch 1. *Work 4 sc in ch-5 sp. Repeat from * around. End wit sl st in beg sc.

Row 4: Chain 20 (not loosely). To get beads on to this chain: Remove hook from loop. Bring bead up to loop. Stick #12 hook through bead and catch hold of loop. Pull onto chain. Repeat until six beads are on chain. Adjust beads so three are on the right and three are on the left of loop. Sl st into same space, tie off, weave in ends.

Beaded Wings Earrings (pink butterfly pair):

Materials:
Small amount #10 (bedspread weight) pink cotton thread
US #6 steel hook (1.8mm)
28 E beads (I used a mix that I call "metallic"... however I think they also go by the name of "peacock".)

Instructions:

Note: Always make sure the bead stays in the front of your work by holding the bead steady with your thumb (or the most convenient finger) while completing stitches after your beaded double or half-double crochet.

String beads.

Row 1: Ch 8. Sc in single back loop of 2nd chain from hook, and in single back loop of 3rd, 4th, 5th, 6th, 7th, and 8th chains. Turn.

Row 2: Ch 1, sc in same sc. Ch 5, sk 2 sc, sc in 3rd sc. Ch 7, sk 2 sc, 2 sc in 3rd(final) sc, so that you round the end, then sc in next sc directly opposite previous sc. Ch 7, sk 2 sc, sc in 3rd sc. Ch 5, sk 2 sc, 2 sc in 3rd sc. End with a sl st in beg sc.

Row 3: Ch 1. Sc in ch-5 sp. (2 hdc, 1 bhdc) 3 times in ch-5 sp. 2 hdc, sc in same ch-5 sp.

Sc in next ch-7 sp. Hdc, 2 dc in same ch-7 sp. (1 bdc, 2 dc) 4 times in ch-7 sp. (Hdc, sc) in same ch-7 sp.

Sk next sc, sl st in 2nd sc. **Ch 4, sc in each single back lp of 2nd, 3rd, and 4th chains from hook. Sl st in same sc.** Repeat from ** to ** one more time. Sk next sc, (sc, hdc, 2 dc) in next ch-7 sp. (1 bdc, 2 dc) 4 times in ch-7 sp. Hdc, sc in same ch-7 sp.

Sc in next ch-5 sp. (2 hdc, 1 bhdc) 3 times in ch-5 sp. (2 hdc, sc) in same ch-5 sp. Sl st in beg sc. Tie off. Weave in ends.

Little Darling Earrings (turquoise pair):

Materials:
Small amount of #10 (bedspread weight) turquoise cotton crochet thread
US #6 hook (1.8mm)
8 translucent turquoise silver-lined 8/0 rocaille/E beads

Instructions:

String beads. Ch 6, join to form a loop.

Row 1: Ch 1, sc in ch-6 lp. *Ch 3 (counts as a dc), 2 dc, ch 3, sc into ch-6 loop. Ch 1, bring bead up to loop, yarn over past bead, pull through, ch 1. Sc in ch-6 loop, keeping the bead in front of your work with your thumb. Repeat from * 3 times more. Sl st into beg sc, fasten off, weave in ends.

Wacky Wonky Diamond Earrings (lavender pair):

Materials:
Small amount of #10 (bedspread weight) lavender cotton thread
US #6 steel hook (1.8mm)
20 E beads (I used some that are clear with "purple paint blobs" in the middle... you can use anything you like.)

Instructions:

Row 1: Ch 2, sc twice in 2nd ch from hk. Ch 1, turn.

Row 2: Sc in next sc, 2 sc in last sc. Ch 1, turn.

Row 3: Sc in each sc across, putting 2 sc in last sc of row, ch 1, turn.

Rows 4-10: Repeat Row 3.

Row 11: Sc in 1st sc, (sc in next sc) 8 times. Insert hk in next sc, yo, pull through. Insert hook in last (next) sc of row, yo, pull through, yo, pull through 2 loops on hook (single crochet decrease (sc dec) made), ch 1, turn.

Complete rows in this manner (ch 1, sc in each sc across, sc dec in last 2 sc's of row) until diamond is complete. (The last row is entirely a sec dec in itself.)

Edging: Ch 1, sc in left side of sc dec. *Ch 1, bring bead up to loop, yo past bead, pull through, chain 1. (Make sure the beads stay in front by holding them there with your thumb while you complete the next stitch or two.) Sk next row of sc, sc on side of 2nd row of sc.** Repeat from * to ** 4 more times. (This creates 5 ch-3 beaded loops on the top left sloped side of diamond.) 1 sc in side of each row of sc, 3 sc in bottom of diamond, sc in side of next row of sc. Repeat from * to ** 5 times. Sc in side of each row of sc to top. Sc in top of sc dec, sl st in beg sc, tie off, weave in ends.

Fully Equipped Earrings (blue pair):

Materials:
US #6 steel hook (1.8mm)
Small amount #10 (bedspread weight) royal blue cotton thread
32 4mm round royal blue cats eye beads

Instructions:

String beads.

Ch 10, join to form loop.

Row 1: Ch 1. Work 16 sc into lp. Sl st into 1st sc to join.

Row 2: Ch 3 (counts as dc). Bdc in same space. Ch 1. (Always keep the beads in front of your work by securing it with your thumb while completing the next stitch.) Dc, lbdc in next sc. Ch 1. *Dc, bdc in next sc, ch 1. Dc, lbdc in next sc, ch 1.

Repeat from * around. Sl st into 3rd ch of beg ch-3. Fasten off, weave in ends.

Bold 'n Beautiful Earrings (darker pink pair):

Materials:
US #6 steel hook (1.8mm)
Small amount #10 (bedspread weight) fuchsia pink cotton thread
6 round plastic/acrylic "glow" beads, approx. 8 to 10mm

Instructions:

String beads (if you're using two colors, making sure you string them the way you want them to appear on your finished project (example: pink-purple-pink-pink-purple-pink). (Say that three times fast!)

*Ch 1. Pull bead up to hook. Pull loop on hook so it is slightly higher than bead. Pull the thread past the bead through the loop. Insert hook between the strand that the bead is on (to the left) and the 2-strand loop (to the right). Yo, pull through, yo, pull through both loops. Pull up on the loop on your hook to cinch/tighten. You have just completed my beaded love knot. (Test to see if it is large enough by making sure that the love-knot strands fit around the bead with ease.) Repeat from * twice more. Ch 1.

Spread love knot strands so one is on one side of the bead and one is on the other. Ch 1. *Work approximately 10 (any number is fine, just be consistent everywhere) sc in strand to left of bead, sc in sc. Repeat from * twice more. Repeat on the other side (approximately 10 sc in single love knot loops, sc in each sc). Sl st into beg sc, finish off, weave in ends.