Rustoleum's NeverWet can be use to write secret messages that stay invisible until it rains
popsicle sticks & hot glue gun - mini pallet coasters
His wedding ring with her fingerprint. How deeply personal ♥
Recreating childhood photos - hilarious idea but seriously...some of these shouln't have be reinacted. lol
Hidden doors -- This company makes cabinets, bookshelves and anything you can think of that fits your existing doorjambs thus hiding the door (and also making use of the space).Lots of great ideas.