Reusable Crochet Gift Bags

I was going through the big duffel bag of yarn I keep in my room the other day when I realized I had a lot of teeny little balls of leftover wool yarn, not really enough to do anything with, but too much to just throw away. Over the course of several days, these were the result:

They're little reusable gift bags, (about the size of my hand,) which I'm going to start using for the little trinkets we give to each other throughout the year.

I sort of like the wacky, multicolored ones the best...

What do you do with all those leftover bits of yarn?