Surprise Toy Super Balls

No, super balls will not make Superman sing like James Earl Jones. They are a toy that I played with in the 80's and a part of me wanted to keep them when I found them in my bag of Surprise Toy meant to replace Halloween candy. 

Then I remembered that I didn't do a thing with them and threw all mine away. These look like marbles, but they bounce like marbles on crack and can wind up in strange places. 

I think I still find one every now and then "How did that get there!?"