The project was a crocheted purse, but I decided to turn it into a Nintendo DS pouch.
I used sports yarn and crochet hook size G.
Ch. 21 turn, and single crochet to end, ch1 turn.
Repeat rows until desired length.
Instead of sewing the edges with a needle I single crocheted along the side, folding the pocket about 3/4 of the length with an overlap that serves as the flap.
Add a button on the flap and chain a strand on the body of pouch slightly beneath the edge of the flap to serve as tie.
Optional straps:Chain stitches, turn, and crochet, knot off to sides of purse.