Calling for creative ideas!

An

Our daycare has monthly sales in the summer months to help the kids learn about entrepreneurship and I'm at a loss for this last one.

It's technically a lemonade stand but we want to try to raise as much money (it all is donated to Ronald McDonald House) and was wondering if other mamas had any ideas!

It can be baked goods, crafts, etc. Last sale we made keychains, cookies, slime, giant pom-pom dusters, and paintings.