Side-by-Side Bike

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bicycle,bike,not a kludge,weld
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Also known at the Sociable, the side-by-side tandem bike has actually been around since the 19th century. Commonly used for courting couples or newlyweds, the bicycle is seeing a resurgence with hackers and DIY enthusiasts. One guide by Instructables user carlitos is a simple weld job consisting of nothing more than an extra seat, pedals, crank and some tubing. I can't think of a more perfect wedding gift.

DIY Roller Trainer

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bicycle,DIY,not a kludge,PVC
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Instructables user dhouggy wanted to ride his bike indoors but didn't want to pay hundreds of dollars for a trainer or professionally-made roller. So with a couple 2x4s and some PVC pipe he was able to craft this working homemade model for just $50.

Because Why Not

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batteries,clever,DIY,gifs,g rated,Hall of Fame,not a kludge,there I fixed it,wtf
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Someone didn't listen to Homer:

[youtube=http://www.youtube.com/watch?v=Xy0UBpagsu8&w=500]

Water-Powered Jet Pack

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awesome,jet pack,neat,not a kludge
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Zapata Racing just released the Flyboard, a water-powered jet pack available to the public. The Flyboard gets it propulsion from a jet ski idling nearby; its hose forces water to shoot out of the user's feet. Not as cool as a the real deal the public is waiting on, but I guess this is a happy medium for now.

http://www.zapata-racing.com/uk/flyboard_uk.php

[youtube=http://www.youtube.com/watch?v=h-7RlL3YtiQ&w=500]

A Buccaneer's Bed

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bed,boat,dual use,furniture,not a kludge
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Apart from the gaping hole in the roof, the hurricane greatly improved their sleeping arrangement.

~NSHA