I do more knitting than crochet, but here are a few projects I've developed over the years. Contributions welcome.
Crochet Continuous Loop Fringe
Easy T-Shirt Crochet Projects
Good for rugs and mats.
Easy, continuous loop fringe to crochet, using only chain stitch and slip stitch. Instuctions.
Here's how to make seamless background images for your web pages.