Here is a very simple flannelboard called "Snowball Friends," (by Liz and Dick Wilmes, in their 2's Experience: Feltboard Fun book) which I have used for a winter toddler storytime. Very simply, a few snowballs are friends and they decide to roll down a hill one at a time. At the bottom, they climb onto each other's shoulders and make a snowman. The best part is rolling the snowballs down the hill on the board. At the same time, you can have the kids "roll" their fists and chant "roll, roll, roll, roll!"
This week's Flannel Friday is being hosted by Sharon (@ReadingChick). Don't forget that I recently made an announcement about Flannel Friday and the holidays, read that here.