Tan and white dwarf hamster with blue collar

I lost my tan and white dwarf hamster yesterday around 3pm near the Ames Public Library on Main Street, close to Welch Avenue by the ISU campus. He's tiny, about the size of a ping-pong ball, with soft fur and a bright blue collar that has a tiny silver bell. He has a small white patch on his left ear and can dart into hedges, shrubs, or mulch beds around the library and nearby yards, so he could be hiding in those areas. This is my daughter's pet and it means a lot to us; if you’ve seen him or picked him up, email me at [email protected].