Best gadget/tool you've come across motor homing?

[Cabrony]

My parents have recently purchased a motor home to travel round Europe for a couple of months at a time. What's the best gadget or tool you have ever come across camping/caravan in etc?

Would love to get them something useful that would serve a purpose.

Thanks!

[Cabrony]

Thanks for the replies. Loomed at the Cadac Safari Chef and it looks very handy indeed! Think I shall be getting them one