When I turned it on, it made an awful noise.
I unscrewed the panel on the bottom and removed the following:
1 bouncy ball
4 colored pencils
2 regular pencils
3 strings from sewing cards
I had black up to my elbows from fishing it all out. I had to sweep up the mess on the floor and reassemble the treadmill. And I was thirty minutes late getting started.
But this is life with a two year old!