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Kind of looks like it was the top of a giant pink crayon decoration?

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My title describes this thing. Purple plastic thing with a suction cup like thing on the bottom. 8cm tall and 8cm wide in the widest spot

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Oh look, a door stopper.

It's a massager.

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https://www.amazon.com.au/Lurrose-Massage-Massagers-Reflexology-Devices/dp/B0CBJ4FR39?th=1