Have a look at the new Kindle Fire. Not sure if it’s due out soon or is already out, but I was looking the other day as my brother wants to get tablets for his kids and is a complete techno luddite.
The Kindle Fire apparently has loads of account controls on it so you can set it up for the kids to use, without worrying about what they are going to be doing on it.
If you look at this page:
and scroll down to ‘perfect for the entire family’ it explains a bit about it, but it says ‘coming soon’. I don’t know how ‘soon’ that is though…
Have you looked at the Tesco Hudl? It’s got quite a rubbery back to it, so from the short play i had with it feels quite sturdy.