APIA has Pinterest boards with many, many different ideas of things to do with kids. My favorites are the Camp Au Pair boards. These are themed activities, so kids can have a “Space” week or an “Under the Sea” week with their au pair. the activities include science, art, math, and cultural projects, with some for every age level.
Here’s a link to the “Under the Sea” week board: https://www.pinterest.com/aupairinamerica/camp-au-pair-under-the-sea/ and here’s one of the projects:
As you will see, these are great ideas for amusing kids during a hot Minnesota summer.