Quick and Easy Gift Card/Money Wallet using Stampin' Up!
Easy Gift Card Pockets | Damask Love
These also make good little pockets for MTNs and Filos. DIY Gift Card Holder... could also be a cute way to send your business card out with an Etsy order :)
Gift card holder
Birthday Petals card side view-pop up gift card holder
Scentsational Season - Day #4 by GunnysCathy - Cards and Paper Crafts at Splitcoaststampers
Cadeaubon - Houder DIY
Two Tags gift card holder