Hat
You take a towel and wrap it around your head to keep the sun out of your eyes. You've invented... the hat!
A hat is just a piece of cloth or a towel you get to stay on your head. Extra points if it protect your eyes from the sun.
ぼう
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People see you wearing this fancy new hat thing and start asking you to share. You grab all your extra towels, roll them up, and bowl (ぼう) them down the street toward everyone who asks for one.
Imagine bowling with hats. Thankfully, they work as bowling balls just as well as they work as hats. You're so innovative!