Paint shaker / vortexer / mixer

Paint shaker for 18 ml paint bottles

I built a shaker for my little paint bottles.

The video you can find
in english:
https://www.youtube.com/watch?v=WwSk9g2Wep4
or in german:
https://www.youtube.com/watch?v=M3S2aroNMtk

This is the Motor I used:
RS385
length:38 mm.
diameter:28 mm.
axial length:13 mm.
shaft diameter:2,3 mm.
voltage:6 V - 24 V
6 V-voltage test:0,116 A.
6 V - 12 V - 24 V: 5140 U/min - 10.473 U/min - 21.000 U/min

Also you need a pushbutton, a bearing (8x22x7mm), a usb cable and some screws.