Thought this was a cool idea!

http://jas.familyfun.go.com/arts-and...&craftid=11074

Undercover Gift Tags:
Does Christmas morning mean a pile of gifts unwrapped faster than you can say "Where's the camera?" Slow the pace a bit with these secret gift tags that will keep the kids guessing and prolong the gift-opening excitement.

MATERIALS:
White crayon
White construction paper gift tags
Colored marker

1. While you're wrapping the gifts, simply use a white crayon to write the giver's and recipient's names on white construction paper tags.

2. When the time comes to open the gifts, have the kids take turns running a colored marker over the tags to reveal who gets each gift and whom it's from.

link:http://jas.familyfun.go.com/arts-and...&craftid=11074