[quote=@Source]
<Snipped quote by Galvanize>

Made anything cool?
[/quote]

Better versions of appliances and machines that I had to work with. With most machines and gadgets, I can take them apart and essentially ingrain them into my memory of how to build them. Depending on the complexity and amount of parts a machine has, the longer it takes. 
*claps my hands together and as I spread them away from each other a small watch gets made*
See? Unfortunately, I have nothing to power this, but all it needs is a battery!