I think it will be a matter of time before they are found pretty easily.
I found 2 fun houses, 2 wheels, a garage, 2 beds and 1 carrier at Wal-Mart yesterday. I bought the house, wheel and both beds and the carrier.
Today, I was at a different Wal-Mart and they had several hamsters (at least 16 - 4 different hamsters), 2 carriers, 1 bed, 2 fun houses, 3 garages and 2 wheels. I bought 2 hamsters. They had an empty spot that was marked $10 ... so, I'm wondering if that was the ball, I'd really like to get that.
It was hard to leave all that stuff sitting there! I hope some other Mom in a desperate search for her child found the stuff and not some Ebayer!!!