Now THAT'S a memory!
Remember these old "cap bombs?" The challenge was to see how many caps you could stuff under the impact plunger in order to maximize the bang (without providing so much cushion that they didn't go off). It was also how we learned to throw straight upward instead of on top of a nearby roof...
Wow - I had completely forgotten about the cap bombs, they were my favourite.
Thanks for putting a smile on my face Zuman
Be well...