Wad up newspapers for a snowball fight. Clean up by making snowmen with the "snowballs." Stuff white garbage bags and decorate with paper scraps and scarfs. (or cover beach balls with white garbage bags.
The ImaginationBox: design a funky winter bobble hat and mittens with these free templates - a watercolour wash over white wax crayon pattern creates an interesting nordic style effect Printables in Documents as winter-mittens & winter-bobble-hat
Weather Board--paint a simple weather/seasonal scene on a piece of foam core board or canvas board. Cut out felt cloth clothing appropriate for the season. Glue clothespins onto the board using the picture as a guide. Talk about the weather with the child. Allow the child to choose the appropriate clothing for the season and pin it to the board.