Weaving with T shirt yarn was interesting. I ended up using every other loop on the tri loom. I also did not do the standard crochet bind off across the top. When I tried the crochet bind off my piece ended bunching up so it was easier not to do this and it looked better also. I played with a knitted on border around the entire piece... Here is what my test piece looked like:
As you can see I got mixed up with my right side and wrong side. Which is why there is a stripe across the top... Since this was just a sample..I figure no big deal.