Origami Valentine Envelope

Origami paper is folded to make an envelope revealing a love message in the middle.  Craft foxes shares the details.

Good for ages 7 and up.

Get the instructions here:
http://www.craftfoxes.com/how_tos_/cute-origami-love-note

Envelope Turkeys

Brown paper envelopes, ribbons and colorful jeweled stickers make cute little turkeys from eighteen 25.

Good for ages 8 and up.

Get the instructions here:
http://eighteen25.blogspot.com/2013/11/little-turkey-craft.html

Fox Envelopes

Envelopes turn into cute foxes with some markers and color paper with minted.

Good for ages 5 and up.

Get the instructions here:
http://www.minted.com/julep/2014/01/22/diy-animal-envelopes/

Duct Tape Envelopes

Brit co turns duct tape into stylish envelopes with separate exterior and interior liners.

Good for ages 8 and up.

Get the instructions here:
http://www.brit.co/a-new-spin-on-stationery-diy-duct-tape-envelopes/

Map Envelopes

Map envelope has a really neat way to get kids interested in writing letters.  The site lets you custom print an envelope with a visual map from any address.  This would be fun to combine with a global random pen pal site.

Good for ages 6 and up.

Print the envelopes here:
http://www.mapenvelope.com/