Present & Correct's Security Paper Tape...
Joseph King's Security Patterns Set on Flickr...
Alexandre Bettler's Bookbinding with recycled patterned envelope paper. Found thanks to Lena Corwin.
The Securty Envelope Project from The Sweetie Pie Press...available at The Sweetie Pie Press Etsy Shop...and fabric through Spoonflower Textile Marketplace...
Security Envelope Flowers from Wedding and Cookies...
THANKS from D.Sharp...
Envelope Mobiles from Painted Fish Studio...
Security Envelope Bunting from Cerebral Excrement...