Bubble wrap and toy trucks. That's all this one is.
Except it's tons more as well!
For little kids like Kit, they might need help learning to push the trucks hard enough to pop the bubbles. But this is a great activity to promote large muscle building, to satisfy deep pressure input, to satisfy sound seekers, and to vent some frustrations as well.
I discovered that the matchbox cars don't seem to have enough clearance needed to get the wheels to pop the bubbles. But the trucks did much better. We are going to try monster trucks and our play dough rolling pins as well!