I found the missing sock! It was 11:30 at night but I still found it! I looked in all the tote bags I've used lately, and some I haven't, to no avail. I took all my recent purchases and left over skeins of yarn out of the baskets they were in, with no luck. Finally, I gave up for the night, and started re-sorting my yarn, when I found it! It had fallen down between a big basket and the bookshelf in my sewing room!
I'll post more tonight, hopefully with pictures. By the way, I've added more yarn to the Etsy shop - Go check it out!