Cheap, incredibly satisfying and kids love it. We have built circular towers and pyramids and everything in between. Sometimes they have a goal of reaching the ceiling. There are constraints you can add to this to make this more interesting and difficult. Imagine if you built the tower and then challenged them to program and fly a drone through without knocking it over!

Extension Accessibility challenges: This area can get touchy for some people. However, when you relate the challenge to animals it becomes a little less charged. Shortly after the shoe activity, I ran across a Facebook post about a bird with legs that were malformed. The veterinarian made tiny snow shoes for the bird so it to be able to walk! You can find connections in the animal world that can address real-world human issues. 

Facebook post: Vets made this tiny bird with deformed feet its own set of mini snow shoes.

This little mockingbird doesn't have a name. It was recently rescued by the California Wildlife Center. The shoes helped to realign its feet, getting them back to the normal foot shape for a bird. After just one week, the bird’s feet were fixed and he was able to walk around on his own...

Photo credit California Wildlife Center