Golden Syrian hamster with white belly

I lost my golden Syrian hamster, Gizmo, yesterday around 3pm after the cage door came unlatched during playtime at our apartment near the Oxford Square on University Ave. He’s a tiny guy, about the size of a walnut, with a fluffy golden coat, white belly, and a small notch in his left ear. He also has a faint white blaze on his forehead that makes him easy to spot if you catch him still. He’s shy around strangers but loves sunflower seeds, so if you offer a snack he might come out. My kid is really upset and I’d be incredibly grateful to get him back; Gizmo is a rescue with sentimental value.