Lost dwarf hamster with blue collar

I lost my tiny dwarf hamster yesterday around 3pm. We were in Kalamazoo, Southwest Michigan, near Bell's Eccentric Cafe on East Kalamazoo Ave by Bronson Park when it slipped from its travel carrier and vanished. It's golden-gray with a white belly, about the size of a ping-pong ball, and it wears a bright blue collar with a tiny silver bell. Look for a small white patch on its left ear and a faint dark spot near its tail—distinctive in dim light. This little guy is a gift from my sister and means a lot to my daughter, so I’d really appreciate any help getting him back. If you find him, email me at [email protected].