Did you know that knitters and crocheters can use materials other than yarn for their projects? Two popular materials that fiber crafters upcycle and plastic bags and t-shirts. Gooseflesh has a great tutorial on how to make "plarn" from plastic bags.
I had a lot of t-shirts that were worn down or didn't fit quite right. I used Craft Passion's tutorial to make several balls of t-shirt "yarn," perfect for big-hook crochet! The t-shirt yarn sat around for awhile, and I finally decided to do a fairly brainless project to use it up. This bag is completely improvised, and hey, it turned out pretty well! Twelve shirts contributed to the bag, which is about 11.5 x 11.5". It is very sturdy and flexible! I am using it to hold yarns that are on deck for upcoming projects.
Bags aren't the only good projects for t-shirt yarn! There are also wonderful rag rug tutorials for people with a lot of t-shirts or scraps of fabric. Crafters also make hats and bracelets. Crafters who make plarn often use it to make handbags as well as sandals, coasters, and containers. Try it!!!