
I think infinity mirror’s are cool. I want to get a smart gift like that for a friend. But not an infinity mirror. What other cool gift can I order online that’s AS COOL AS an infinity mirror? Preferably 20$ to 50$

I think infinity mirror’s are cool. I want to get a smart gift like that for a friend. But not an infinity mirror. What other cool gift can I order online that’s AS COOL AS an infinity mirror? Preferably 20$ to 50$
A desktop stirling engine makes for a fun kinetic sculpture. They’re powered by temperature differential such as by setting it over your morning coffee/tea or just the warmth of the sunlight hitting it.
Here’s a fun video talking about stirling engines