
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$
Why no one has mentioned a lava lamp?
A useless machine
I once had an hour glass that instead of sand it had some sort of slime, it was very cool to watch the bubbles slowly rise up the column.You say it’s useless, but half of internet is running on that. Hint: Cloudflare
I bought myself a lava lamp because yes, they’re cool. Takes an hour to warm up, though. I usually lose my focus on it before that.
Splits a beam of white light into different colours, and shines them out diffferent orthogonal faces of a cube.
Looks cool but I had to laugh at this:

I’ll do you one better, Dichroic Glass Dice
They are alluring. Agreed, those are better.
Any tips on which set is easy to read, and looks the best?
No clue, but the frosted looks easier to read to me
This thread just walked me back into Sharper Image circa 2003
Little piece of bismuth was a good gift I gave, small desk ornament or such
Euler’s Disc, along with the most solid glass mirror you can find.
I’ll list a few that I like but with no links because I don’t want to use Amazon and most results that I find are limited to EU based shops anyway so not sure if it helps you. But I am sure you’ll be able to look them up
Sand pendulum. Basically a pendulum that draws patterns on very fine sand. If you see them you can probably make one yourself that is even cooler
Double Pendulum, pretty cool to look at
Gyroscopes.
Tensegrity models. Those floating style structures that actually hang
Decorations with magnetic sand or fluid
Those little parabola mirrors that make the toy seem to float above.
Newton’s cradle
Good quality Rubik’s cube
Prism color cube
Magnetic sand hour glass
If the recipient is technically inclined, then a kit for a mini tesla coil would be cool
Gonna suggest a kinetic sand table. The tabletop is glass and underneath there’s a bunch of sand and a metal ball that rolls around drawing patterns. They’re pretty neat.
I built one of these (shoutout to V1Engineering) and a $20-$50 budget will get you maybe 10% of the way there.
I’ve always liked those magnetic levitating globes!
(You can also find magnetic levitating <insert TV show prop here> for a variety of tv shows and video games)






