Personalized gingerbread "friends" make popular gifts
Katy Lee's (Adventures in Parenting) idea is less a hack than a holiday handmade project and gift idea in one:
My teenage daughter used a gingerbread man cookie cutter, decorated them to look like her friends, and gave them to her friends for Christmas. Just use small candies and sprinkles for clothes and accessories, and different colored frostings for hair. She also made some to look popular anime characters to give to her friends. Her friends liked them so much they didn't want to eat them!