Making a duck tape purse is super easy. I haven't created a purse with pockets or anything, but that would be a simple addition. I used my purse for 30 days straight before the strap fell off. It held up really well. Much like the ID holders, I'd make several of them at a time. Get out all of your colors of duck tape and have a party.
Duck tape - the more colors the better
Without a doubt, you should use a rotary mat and cutter. It'll make the project so much easier.