17. Make Slime
In the past few years, Slime has become an extremely popular trend. Fortunately, it is easy to make at home with simple ingredients like glue, food coloring, plus other components that you can have in your pantry. If not, you can buy a slime kit online for your kids.
Not sure where to start? Just google Slime as a game on YouTube or Pinterest, and you'll see tons of videos with examples. People who regularly make Slime say it helps relieve stress, and it's a lot of fun.