In fiction land, inventions are mind-bogglingly ''easy'' to make. This fellow is not a BunglingInventor, TheProfessor or a TeenGenius. He might have a degree in Art History. However, he has managed to build some item of technology the entire industry could not replicate, probably [[HomemadeInventions in his garage]] using the knowledge he got from flipping burgers at [=McDonald's=]. Mostly [[ReedRichardsIsUseless he uses it for some mundane reason like fighting crime or making breakfast]], or he just has it lying around so it can be given to the main character.
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!!Examples:

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[[folder: Comic Books ]]

* [[Franchise/SpiderMan Peter Parker]] invented a fluid that can be used as a stretchy rope and that hardens into a unbreakable barrier, in ''high school''. There's been various explanations for this over the years. Some versions just have him as a budding super-genius on the same level as [[ComicBook/IronMan Tony Stark]] or [[ComicBook/FantasticFour Reed Richards]], but some authors ignore this because it clashes with his "everyman" portrayal. One divisive explanation is that he gained instinctive knowledge of the composition of web fluid as part of his spider powers. Some continuities forgo this trope altogether and say that his father invented it.
* The original Franchise/{{Superman}} claimed to have made his suit himself from a fabric he invented. You know, the suit that stays on him when he flies through the sun. Imagine the commercial and military applications for ''that.''
** From time to time Superman's powers include super-intelligence. It's usually ignored because making him the most powerful ''and'' smartest person on Earth makes it really hard to write stories about him.
** In one episode of ''Series/TheAdventuresOfSuperman'', Comicbook/JimmyOlsen invented an Anti-Gravity solution. In another, Perry White discovers a way to extract Uranium from seawater.
* In ''Comicbook/ExMachina'', Mitchell Hundred got a full blueprint for a ''jetpack'' from the aether in a dream, presumably as a side effect from his machine-talking powers. He also built a machine to nullify his own powers, some laser guns, taser gloves, a multi-sensor helmet, and maybe some other cool stuff we haven't seen yet. Justified, since his superpower involves [[{{Technopath}} communicating with technology]].

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[[folder: Literature ]]

* Norman the shopkeeper from the ''Brentford'' trilogy by Robert Rankin. His illuminated cowboy costume was less successful, as a static build-up caused it to collect sawdust and it (predictably) suffered a catastrophic short when someone tried washing it off with a soda siphon.
** Successful projects include a van fuelled by the driver's anger, and teleporting the Pyramid of Cheops into Brentford football ground. His inventions are invariable built from Meccano.

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[[folder: Live Action Television ]]

* On ''Series/TheBigBangTheory'', when he lost his job, Sheldon, a theoretical physicist, somehow managed to [[OmnidisciplinaryScientist genetically engineer glow-in-the-dark goldfish]] in under a month.

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[[folder: Roleplay ]]

* ''Roleplay/DestroyTheGodmodder'': The second game has the alchemiter, which allows the players to combine together various items to make new and cool exciting items, such as the obsidian tipped terror and ellorium autobow.

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[[folder: Webcomics ]]

* Nick of ''Webcomic/GeneralProtectionFault'' has the [[ScienceRelatedMemeticDisorder Inventor's Gene]], justifying the trope, as does his uncle, Otto Wisebottom.

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[[folder: Western Animation ]]

* In the first episode of ''WesternAnimation/TheFlintstones'', Barney invents a flying machine. In later episodes, Fred manages to create various concoctions out of his garage, including a shrinking potion, a super glue and an invisibility formula. And all this using Stone Age technology!
** Maybe they're ''ante-Deluvian'' cavemen.
* Mr. Turner on ''WesternAnimation/TheFairlyOddParents'' makes several homemade (and dangerous) items in his garage.
* Huey from ''ComicStrip/TheBoondocks''.

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[[folder: Real Life ]]

* A significant proportion of the code in most OpenSource software is written by self-taught hobbyists working in their spare time.
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