this post was submitted on 29 Nov 2025
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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$

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[–] WolfLink@sh.itjust.works 1 points 14 hours ago

I’ve always liked those magnetic levitating globes!

(You can also find magnetic levitating for a variety of tv shows and video games)

[–] lucullus@discuss.tchncs.de 2 points 18 hours ago

If the recipient is technically inclined, then a kit for a mini tesla coil would be cool

[–] quediuspayu@lemmy.dbzer0.com 19 points 1 day ago* (last edited 1 day ago) (2 children)

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.

[–] pastermil@sh.itjust.works 5 points 1 day ago (1 children)

You say it's useless, but half of internet is running on that. Hint: Cloudflare

[–] Blisterexe@lemmy.zip 0 points 23 hours ago (1 children)

more like stumbling, recently

[–] pastermil@sh.itjust.works 1 points 15 hours ago

potæto, potáto

[–] Pat_Riot@lemmy.today 1 points 1 day ago

I love my Useless Box!

Euler’s Disc, along with the most solid glass mirror you can find.

https://youtube.com/shorts/Q8M3Il0Zv68

[–] Trainguyrom@reddthat.com 6 points 1 day ago

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

[–] titter@lemmy.world 10 points 1 day ago

This thread just walked me back into Sharper Image circa 2003

[–] ace_garp@lemmy.world 19 points 1 day ago* (last edited 1 day ago) (3 children)

Dichroic glass

Splits a beam of white light into different colours, and shines them out diffferent orthogonal faces of a cube.

Turn music down

[–] stickly@lemmy.world 3 points 14 hours ago (1 children)
[–] ace_garp@lemmy.world 1 points 12 hours ago (1 children)

They are alluring. Agreed, those are better.

Any tips on which set is easy to read, and looks the best?

[–] stickly@lemmy.world 2 points 4 hours ago

No clue, but the frosted looks easier to read to me

[–] Trainguyrom@reddthat.com 3 points 1 day ago

I think I've found my new go to secret Santa gift

[–] can@sh.itjust.works 9 points 1 day ago

Looks cool but I had to laugh at this:

[–] tal@lemmy.today 15 points 1 day ago* (last edited 1 day ago) (2 children)

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.

[–] prole@lemmy.blahaj.zone 4 points 1 day ago

I feel like the novelty of these things wears off almost immediately

[–] The_Grim_Dreamer@lemmy.world 1 points 1 day ago

X-Files Theme plays

[–] cosmicrookie@lemmy.world 9 points 1 day ago

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

[–] radiouser@crazypeople.online 5 points 1 day ago

I've always thought Galileo Thermometers were pretty cool.

[–] Zwuzelmaus@feddit.org 9 points 1 day ago
[–] FoxyGrandpa@lemmy.world 12 points 1 day ago

Little piece of bismuth was a good gift I gave, small desk ornament or such

[–] emb@lemmy.world 8 points 1 day ago

Those little parabola mirrors that make the toy seem to float above.

Newton's cradle

Good quality Rubik's cube

Prism color cube

[–] CameronDev@programming.dev 11 points 1 day ago

RGB LED strip kit. Can use as backlighting for a mirror or tv, and could later be used to make an infinity mirror.

https://a.aliexpress.com/_m0Lnqad

[–] Addition@sh.itjust.works 2 points 1 day ago (1 children)

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.

[–] CmdrShepard49@sh.itjust.works 2 points 17 hours ago

I built one of these (shoutout to V1Engineering) and a $20-$50 budget will get you maybe 10% of the way there.

[–] Hossenfeffer@feddit.uk 2 points 1 day ago

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.

[–] Elextra@literature.cafe 4 points 1 day ago

Arc electric lighters

[–] shittydwarf@piefed.social 7 points 1 day ago (2 children)

Rock slings are incredibly fun, you can chuck rocks and balls so far people love to try it, especially kids

[–] CmdrShepard49@sh.itjust.works 2 points 17 hours ago

Along a similar vein, my coworker keeps raving about a little toy salt shotgun that he uses to kill flies in his house.

[–] CameronDev@programming.dev 5 points 1 day ago

This is just a gateway drug to a trebuchet.

I bet you'd love it if we were all launching 90kg objects over 300m away.

[–] ThatGuy46475@lemmy.world 3 points 1 day ago

Magnetic sand hour glass