A large obsidian slab standing perfectly vertically.
this post was submitted on 04 Oct 2025
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That singing fish animatronic. Convinced people itβs a god. Wait for the battery to die and the eventual religious crisis.
They would be deeply concerned as it appears to get slowly possessed by a demon when the batteries are low
one of those fleshlight vibrators that suck your dick
Neanderthal goes extinct.
Bicycles. If we could have gotten bicycles a few centuries before cars, I don't think modern cities would be so damn car centric.
If I may ask, where are you from? The city I live in is a nightmare for cars, the roads were made for horses and walking, narrow and winding cobblestone streets and the city tries its best to keep cars out of the center.
US. An utter hellscape. Where we ripped out world class trolleys so they wouldn't inconvenience drivers.
I would take a portable CD player, place a CD with Rick Astley's Never Gonna Give You Up on it playing backwards, hook up solar panels, remove the ability to shut it on/off, and set it up a circuit that will:
- As the device solar charges, keep it off until some voltage threshold is exceeded
- Once the voltage is high enough, start a random timer (8 - 100 hours), so that it is not immediately obvious that the sun activated the device
- When the timer ends, turn the music on on repeat mode
- Sometimes turn the music off at random, and then turn it on again at random after a long delay, so that in some cases you can have turn 'ON' events without the device being exposed to the sun
- When the voltage drops below a low threshold, turn the device off until it is charged again
Imagine how crazy it would be as tech advanced through the ages and people create their own artificial sound and eventually realise that that sounds from the mysterious artifact from the future was playing music BACKWARDS and there's discernible lyrics.
Hey this might help us out. If Neanderthals learn how to sit for hrs a day we would get that evolutionary advantage.
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If youβre looking for the biggest change in our timeline for the littlest work Iβd give a hindu-arabic numerals to early Greek mathematicians. Watching those guys try to wrap their heads around zero, that would fuck Pythagoras.
The idea that nobody understood the concept of zero until long after the Greeks is just something I can never understand.
Just... how? I don't remember having to be taught what zero was, I'm pretty sure I grokked it instantly.
A single glass coca-cola bottle
You must be crazy. ;)
Aye yi yi yi yi
One of those 3D printed non-round gear toys. They could immediately appreciate both the impressive technology that went into designing and manufacturing it, and that it has no use whatsoever. Which would be a trip.
A solar panel with a light attached.
That one would actually make more sense if you'd never seen either part separately, but I like the spirit.
My thought process was, this produces light only when there is light outside making it effectively useless.
Exactly, although to a cave person that's just an interesting device that redirects sunlight somehow. They'd have to understand it could have been stored up for night or used for something else, in order to feel ripped off.
Something with gears. Like a cranked egg whisk. Huge amounts of science went into this, but all of it should be replicable in a few generations of experiment with even bronze working. And it should inspire inventors of the age too
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A snow globe from Niagra Falls, a clothes hanger, A Buttplug, a die cast Model of The General Lee, some Tide pods, an assortment of Weeble Wobbleβs, The Complete Jane Fonda Workout (large print, hardback edition), A magnifying glass, A bag of Candy Corn.
You're just listing all the things within arms reach, aren't you?
These items are in my go bag.
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A monolith
That still trips up some people today. That metal monolith that was propped up in the desert a year or two ago comes to mind.
I'd just give a LGM-118A Peacekeeper MIRV to the Aztecs and say nothing more. I wonder if they would eventually manage to do something with it.
The fleshlight
Leaf blower. They are loud and the "breath" coming from them is pretty awesome.
A bicycle.
Anything mechanical, even someone in 5000bc would be able to figure out how it works.
I think the problem would be recreation. Can't really make an effective chain out of wood I assume.
You actually can, although I don't know how rugged the result is. You probably could make a heavy, one speed bike out of wood with like, wheels that are just big disks. I'm not sure if it would beat walking, especially before purpose built roads were common. That being said, they might at least think going down a hill at speed is fun, which is what the first bikes were made for.
For a modern-style bike, the wheels are more of an engineering challenge, as is centering the various parts and ensuring a tight fit. Modern machine parts are made with micrometric precision, which involves surprisingly simple tools, but a whole lot of science and technique.
If it was a few thousand years later after horses were introduced, they could copy the concept of tension wheels for their chariots.
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A Furby.
The mechanical Furk
Robotic animal recreations were actually very popular in the ancient world.
A Nintendo Switch running Animal Crossing. Assume it has some kind of perpetual battery, and they can figure out how to operate it/play the game, and read our modern English.
I'm thinking they figure modern civilisation is about (or back to) fishing and farming... and that animals are intelligent. Like validating TF outta the Egyptian pantheon. You're a human but you have a dog for a neighbor, here's a koala, a gorilla, an eagle... and they all talk and wear clothes.
(Of course, if we wanna blow their minds with a game AND we can assume they can play it, why not just go straight to Cyberpunk?)
oh I'd teach 'em modern english, and then dump a truck load of People's Magazine's outside their hut
Going for a hunt today? Can't. Need to know what Janniston said to Branjelo on page 4
One of those pens from bawdy seaside resorts where you press the button on the end and the lady's clothes disappear. Might as well be magic.
Magnets
And for generations people will ask βMagnets, how do they fucking work?β
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Condoms
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