IdentiToy has released what appears to be a LEGO® brick compatible base plate intended to fit over an ipad/android screen to help create environments for your minifigures. The application for ios and android is free, so you can check compatibility with your tablet’s resolution beforehand(which is nice for android users in particular), but the baseplate is $9.99 as an introductory price. I just hope you’ll put a good screen protector on your tablet first. .