
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’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)
If the recipient is technically inclined, then a kit for a mini tesla coil would be cool
Euler’s Disc, along with the most solid glass mirror you can find.
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
more like stumbling, recently
potæto, potáto
I love my Useless Box!
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.
This thread just walked me back into Sharper Image circa 2003
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 thought Galileo Thermometers were pretty cool.
Splits a beam of white light into different colours, and shines them out diffferent orthogonal faces of a cube.
I’ll do you one better, Dichroic Glass Dice
I think I’ve found my new go to secret Santa gift
Looks cool but I had to laugh at this:

Socks.
Awesome, and you can get them in different colors, like grey, or black, or blue, or beige. Not white though. White socks are only for playing sports.
If you’re wanting something that makes for a neat, mesmerising visual effect, maybe a plasma ball?
https://en.wikipedia.org/wiki/Plasma_globe


It looks like they’re available on Amazon for the mid-to-low end of that price range.
I feel like the novelty of these things wears off almost immediately
X-Files Theme plays
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
The drinking bird
Arc electric lighters
Little piece of bismuth was a good gift I gave, small desk ornament or such











