Make snow globes using fake snow in the sensory table - Winter Play Ideas from The Imagination Tree
Minne-Mama: Color Toss Activity (with Video!)
Cotton ball fine motor activity. Could be "clouds" or "snow" -- fun for babies to play in, and for toddlers to practice fine motor skills.
This would be a great activity for an indoor recess. The children could make the ring and decide what the game rules are.