I made this beach/pool tote today. Sorry about the fuzzy low-light iPhone picture, I’m to lazy to go find the camera. I made up the pattern, based loosely on one of those bags you buy at the grocery store. It will actually hold two of those bags, I think, though I made it 1.5x longer on the long dimension. The exterior fabric is some outdoor/patio fabric i picked up for 50% off at joann’s, and the lining is just cotton. The thread doesn’t match terribly well, but it’s what I had on-hand.
I think it’s pretty nifty. Now I’ll have to trek over to the pool and try it out!