Simple drones are starting to get a lot cheaper, but it's way more fun to build your own custom one out of LEGO.
If you're looking for a fun drone project that doesn't cost an arm and a leg, Instructables user Weseley found a way to put your LEGO bricks to good use. You'll have to order some basic drone parts and do some minor soldering, but the rest is just playing with LEGO. You can even toy around with your own frame designs to see if you can come up with something better.
Check out the LEGO quadcopter flying around in the video above, and see the full guide at the link below.
Cheap flying Lego quadcopter [Instructables]