Gizmos aren't just for hero work. There are plenty of things in the mundane world where a little 'edge' can make a difference. Take my key-chain for example. It's constructed from three 5 foot lengths of para-cord and 2 hours of patient work.
The tassels have been decorated with a Chinese clover knot. However, what makes it special is the secret compartment.
The possibilities are endless: money, letters, even a vial of super-serum can be hidden in plain site. The only down side is that its not waterproof, but that could be fixed with a long plastic tube (craft stores often sell seed beads in this sort of package) or simple wrapping the treasures in a zip-lock bag.
Now, this sort of key-chain can be bought, but lengths and decorations vary. That's why I made my own (the first picture should prove I'm not cheating.) It's not a mechanical gizmo, but it meets Merriam-Webster definition of the parent word gadget. It's a small, useful device.
Put in a plastic bottle of frozen water (use salt water to get it extra cold)
Add a small fan...
The fan forces air into the ice chest, but there is no direct exit, forcing the air to flow over/around the supply of ice before exiting through the vents(s) Lacking better parts, I used to 20oz soda bottle bodies to make exhaust nozzles to help direct the cold air coming out of this DIY room cooler.
Grade: a block of dry ice
::NOTE:: Dry ice would be a bad thing to use with this room cooler. You would risk killing yourself by asphyxiation
Last Edit: Jul 28, 2014 9:48:15 GMT -5 by rypperd0c