What a fun weekend activity - this diy kit provides (almost) everything you need to create your own fabulous flora t-shirt. Comes in white, black or marine. $29 at Eliz + Axel
Turn those old treasured T-shirts into something new and functional - a quilt! This T-shirt Memory Quilt Kit comes with everything you need to make your own T-shirt quilt, and if you don't know how to sew, for an additional charge, the makers of the kit will sew the quilt for you. $75 at Uncommon Goods
Just go crazy and make your own absolutely fabulous T-shirt that features your own art and words with this T-Shirt Graffiti Marker kit. $10 at Fred Flare
Have you heard of T-shirt yarn? You take T-shirts, make them into yarn, and then use it to knit or crochet. How cool is that? This site, Craft Passion, gives a nice tutorial on how to turn a T-shirt into yarn.