Where to get good puzzles?

[rr_claire]

So Claire is a puzzle freak.  She's sompletely in love with them.  The problem?  All of the 25 piece puzzles are now getting boring for her, cause she can do them in just a couple of minutes.  I've searched everywhere in town, and the next size puzzle is 150 pieces.  I think that's too big.  I'd like to find some nice 50 piece puzzles.

Anyone know of any online stores, or know of where to get a 50 piece puzzle?