This winter we did a preschool with my friend and her kids on Mondays and Wednesdays. We took turns being in charge and going to each others houses. We stayed with the kids so that we could socialize too. Half way through it turned into Just Wednesdays because her and I spearheaded a neighborhood playgroup at our church on Thursday mornings for all the moms to get out of the house and let the kids run in the gym.
This would make a lovely Rainy Day Spring Activity