Kids Expos
A great idea is to find local Kids or Children's Expos in the area. Its springtime and they have alot of fun activities and information to offer. Plus it doesnt cost alot.
Another great idea is to find inflatable indoor play areas to take the kids. That way, they will get their exercise and have fun at the same time. Also join their mailing list and view their websites for 'Open Play' times, which is great for a few hours and you can join in too!