Here are a couple of ideas to keep them busy, teach them about nature and have a little fun outside too!
Frozen Sun Catchers
Go outside and gather some items from winter nature.
We gathered pine needles and pretty leaves. We couldn't find any berries, but they would have been a great addition.
Place the items in bowls or other containers and cover them with water. To jazz them up, you can add a few drops of food coloring. You can also sprinkle in bird food.
Submerge some string for hanging & set outside to freeze. *Note* put them someplace shaded from the sun while they freeze. This is also a good project to do before bed, so you have them as a frozen surprise in the morning!
Once they are frozen solid, hang them outside where you can see them. They are so pretty when the sun hits them. If you used bird food, they will be enjoyed by the birds when the sun catchers melt.
Paint the Snow!
Fill squeeze bottles and spray bottles with water and a couple drops of food coloring. Go outside and paint the snow! We had a blast doing this. Although, I think my girl had more fun running through my art than making her own!