I took out the foot beyond the gusset in the first sock, and made thick stripes using the yellow sock yarn and some navy tweed leftover from a pair of socks I had just finished for myself. Then I copied the stripe pattern on the second sock. They fit my son with room to spare! Mission accomplished!
I have socks that fill the need that I had, but they don't look good. They looked like I set out making yellow socks and didn't have enough yarn. Now what?
I looked around at my stash and found a little ball of size 10, white crochet cotton. Hmmm. If you don't look too closely at the socks, they look like black and yellow stripes. Sounds like a bee to me, and bees need wings. So I ad libbed two pair of white bees' wings out of the cotton, sewed them onto the socks and added a smiley face and antennae to the toe of each sock. Now my son has bees on his feet. Even my husband thinks they are really cute! I could even imagine doing this with different colors to produce butterflies, lady bugs, and other critters.
And how did I make the wings?
Using #10 cotton and US size 2 knitting needles:
Row 1: k
Row 2: k1, inc 1, k to last st, inc 1, k1.
Rep these two rows until you have a total of 18 sts. K 1 row, and then place the first 9 sts of that row on a holder.
Over the rem 9 sts, k 4 rows even.
Next row: k1, k2tog, k to last 3 sts, k2tog, k1.
Next row: k
Rep these 2 rows until 5 sts rem. BO.
Rep for rem 9 sts on holder.
Make a total of 2 per sock.
The moral of the story? If you want to make a "scrap yarn project," but are afraid that the emphasis will wind up on the "scrap" end of it, find ways to embellish the project (either with add-ons or with interesting stitches/textures/shapes built in) that will draw the eye to something else.