Upcycle old tee shirts into little knitted cloths or coasters.
Who says you can only knit with yarn? Cut old tees into strips, and knit these funky little cloths. They can be used for a variety of purposes, even as coasters. I love the chunky, durable nature of them.
The second step is to cut the tee shirts into long strips that can be tied together and wound into a ball. After some trial and error, I found that cutting the strips very narrow made knitting easier (I used a size 11 needle.) If you prefer wider strips, make sure you use a larger knitting needle, such as size 14.