So with some tricky objects you can use Moi3D with a simple tablett low cost! ;)

https://www.realvnc.com/ for manage your computer from your Tablett (free)
(the only one that i found for manage the MOI's "right click" !

this 5€ for drawing on your tablett


That's all ! All works like a charm!

If by hasard you don't like pen graphic
with this (5€) you can connect your favorite mouse on your little tablett and manage Moi3D as usual but from the swimming pool in a rocking chair! ;)