Here's a favorite seasonal project from the Backyard Farming archives: ditching the candy of a traditional gingerbread house and decorating with treats for the birds instead. (Read here to see how my candy frustration fueled this idea!)
Use popcorn, crackers, sunflower seeds, shelled peanuts, pretzels and -- what else? -- birdseed to adorn a gingerbread house. The house shown here is a grandpa special, made out of wood and designed for perennial use. You may use regular gingerbread, graham crackers or even simple cardboard boxes as the base. Of course you'll want to put a bird feeder house outdoors, but make sure it is in a sheltered area where it won't get damaged from rain or snow, such as on a covered porch. Put it somewhere you can watch from a window.
Instead of icing, I used a mixture of peanut butter and cornmeal to attach the bird treats. The cornmeal makes the peanut butter easier to spread, and is also easier for the birds to eat. Another option is shortening in place of peanut butter (still mixed with cornmeal).
Not only is this a fun project to make, you get the added benefit of watching birds join in the winter celebration.