Created a charging dock with custom-sized slots for a 2DS, Kindle Fire, Samsung Galaxy Tab S2 and iPad (all tablets in Otterbox Defender cases). Sized to fully use the full print volume of a Prusa i3 MK3, I also included a slot sized for a charging bank on the back (I chose the Bestek unit available on Amazon for about $25: http://a.co/d/0Pv96MT) that could be attached via a zip tie inserted through the included slots and pulled tight.