All it Needs is Some Cat Hair Brush Attachment

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cardboard,cleaning,neat,vacuum
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From the submitter:

The vacuum cleaner was missing those floor cleaning accessories, so I made my own with isolant tape and a box.

Emergency Medical Patch

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cardboard,cars,tape,wtf
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By Unknown
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Clearly, these guys are heading to the Roxbury. ~Not-So-Handy Andy

Laptop Repair Level: College Student

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box,cardboard,cardboard box,college student,g rated,laptop,there I fixed it
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Y'know how a nickname for a computer is a box? Well, there you go.

Problem Solved!

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bicycle,bike repair,pizza box,bike,funny,cardboard,tape,there I fixed it,g rated
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Submitter MarchNero says: Whenever I'd go biking in jeans, my pant leg would always get caught in between the gear and the chain. To fix it, I simply taped a cardboard circle to the pedal. Works like a charm.

Hat Extension Prototype

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cardboard,clothing,dual use,hat
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Must be a new product from everyone's favorite inventor, Balloon Boy's Dad. Patent pending.

~NSHA