Right now, you can get the Flashforge Adventurer 5M 3D printer for just $239, which is $60 off its usual price of $299. This high-speed printer is fast, with a max speed of 600 millimeters per second.

So, you got a 3D printer for the holidays, and you’re excited to dive in. Chances are, you’re not sure where to begin. What can you print? What’s fun? What’s useful? Justifying the purchase of a 3D ...