Are you looking for free or low-cost things to do in the Twin Cities? Be sure to check out the Caponi Art Park in Eagan, MN (just a short drive from the MOA). Go on a Tuesday morning and you can check out their Family Fun Tuesdays!!! Every Tuesday, June - August, they have a ticket-FREE event at 10am. They do suggest a donation of $4 a person.
Get outside and enjoy performing arts while enjoying nature at the same time. It's a win-win situation. We have been there for a few events, including the puppet show that is pictured below.
I was looking over our schedule and the events listed and trying to figure out 1 or 2 that we can make it to.