Black Ink Studio - Printable Wedding Envelope Liners

DIY envelope liners to go ga-ga over by Greyberry Design

Funky, colorful abstract mail art made with watercolor + a gel pen by Lindsey Bugbee

Three Creative Envelope Design Mini-Tutorials

20 Tips for Packaging Christmas Cookies: Paper Envelopes | thegoodstuff

20 Cute Ideas for Packaging Christmas Cookies