He Tapes 4 Tennis Balls On A Cabinet And The Reason Is Genius.

Youtuber Dave Hax is one of my favorites when it comes to new tricks and hacks. He has a lot of them, but I think some of the one’s in this video are the best so far. I will make a mental note of this. Above all, I like the one at 1:10 in this video. It is very clever and you should be able to make it with material you have in your house. Check it out!

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