Mini Desktop Heater

When I am working on my PC for some time, (elbows are bent, blood circulation is poor) my hands starts freezing. I am tired of this situation and decided to solve this problem by building a small air heater for my hands. It is a super simple design which consists of only 2 3D-printed parts and a M4 bolt and nut.

You will need a small 50w heating element and a 12v power supply. The psu should be 60w+.

Here you can find some heating elements: http://fas.st/jDMMgG http://ali.ski/c5AWw
And