I was looking for a tablet car mount that is easily removable and doesnt leave any traces on the interior. It's quite nice to use a tablet on longer trips, especially the navigation app, however i dont want to use it every day. Any commercial mount i had found took too long to remove or disturbed the design of the interior.
So heres a simple solution that anyone should be able to make in 5 minutes, and it removes itsself in 1 second completely. I have done over 600 miles with this on highways and European country roads with some agressive turns. It was holding the tablet perfectly secure and even dampned the road bumps a little - which wasnt originally intended but works really well.
For this to work, you should already have a standard leather or plastic case for your tablet as most reasonable people do. If you don't have a case you are screwed - you will break your tablet soon so don't bother doing a mount for it. I use a case similar to this one.