After you've repapered your walls, use the leftover scraps to make distinctive greeting cards.
Source: Martha Stewart Living, January 2004
Choose envelopes in matching colors.
First With a pencil, trace rectangles twice the size of the envelopes onto the reverse side of the wallpaper (plain, smooth backs work best), less 1/8 inch all around.
Cut them out, and fold them in half; if the cards curl, flatten them under a book overnight.