this site has printouts for "petal" gift card holders-could also be used as a mini card and write a note inside
Origami envelope or gift card holder:
DIY gift card holder tutorials - AndreasNotebook.com
Stampin' Up!'s Envelope Punch Board makes a fabulous gift card holder!! So easy.
Make your own envelopes. I have some awesome paper scraps lying around just for this.
MINI Envelope Gift Card Tags ... use Envelope Punch Board to create the envelope
Easy folded gift-card tags, by Amber at Damask Love: http://www.damasklove.com/modern-bright-easy-gift-card-tags/
2 Easy DIY Gift Card Holders for Christmas or Birthday Gifts! | @karenkavett
Template for Laminate and Sew Gift Card Envelopes from Cathe Holden on SC Johnson's Family Economics blog. Photo courtesy of Cathe Holden.
Free printable mini envelope template - making my own money bags for Tet