No shopping for me... I give out the bucks they do their own.
One cannot please teenagers. :-)
Several years ago, my dad sent a book that had belonged to my great, great uncle. The book itself is really cool. It was published in 1893, and is titled How To Become A Succesful Electrican. It's really about becoming an Electrical Engineer.
Attached to the book was a note saying, "look for the bookmark". The bookmark was a c-note. I was tickled pink to receieve the book itself, but forced myself to find a use for the dough as well.