Deep Thought:

deep inventions: the retractable threaded bolt. it's just like a regular bolt except it has a button which makes the threads slide in flat making it a smooth shaft, so you don't have to unscrew the nut anymore, just press the button and slide the nut right off. so the next time you go to the hardware store it would be like, "good day, governor. I'll take two dozen of your finest retractable threaded bolts, my good man, now be off with you." the proprietor would return with the bolts and you would place them in your satchel under your cape and pay the squire his 3 gold pieces (or whatever they cost) and bid him a good day.

Submitter:

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