I know this has been done a jillion times. I was inspired by my sister Colleen at Taking the reins in L.A. She is doing a garden course with her students and was talking about creating a produce bag with her friend Raina, and her students. This is just one of many ideas out there. I did a simple photo tutorial. This is something that any one can do and its only one seam. You can either use a machine or hand stitch. I recommend useing a zig zag stitch if you are using a machine.
Sew bottom seam only.
Use any tee shirt that you like.
Fold it in half. Cut sleeve off and cut neck in a half U shape, it dosen't matter if they are equal in depth.
You can turn inside out to sew or not. Be creative.