I think Erno Rubik would like this - one of his puzzles with a hole in it.

Round the back it also has a handle. But I really don't fancy trying to drink out of it as I'm sure the tea would get stuck in the corners and then slosh out all over my shirt.

As for doing the real puzzle, I'm afraid I'm one of those without the patience to bother with one of these and would rather peel the squares off and reapply them in the correct order!