Not only does the crossbow fit into your pocket, but it can join your arsenal of miniature weapons. DaveHax here walks us through all the steps necessary to make the mini crossbow, in case you need a new DIY project. Not only can it shoot a variety of things, but if you're feeling adventurous, you can even load it up with a flaming q-tip by using this other tutorial:

And remember, your crossbow can come in a variety of colors:

If only I knew about this stuff in middle school!

How to Make a Mini Crossbow [DaveHax]