I whipped up a few of these for my sisters' birthday Monday (they're twins).
I found the tutorial here.
It's super light weight, and has nice little dividers inside for credit cards and cash.
Zippers used to scare me, but I'm getting over it. Her instructions made it pretty easy.
I made one for myself while I was at it. I love not having to lug a huge purse into the store with me. That's easy peasy.