After Tate Chmielewski first encountered cigar box guitars at a folk music festival, he started building musical instruments from unconventional source materials. This is an electric guitar with one EMG active pickup based around an old ammunition box.
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Oh and when you say "bass" I presume you mean "bass guitar". A bass is something different altogether. A bass in your terms is still a guitar anyway.
All of which gives me an idea. I was thinking of building an unusual uke, but all the normal silly ideas have gone. Solid bodies, flying V, strat, you name it there's a uke that shape. I do however have an old ammo box out in the garage doing nothing on top of the beer fridge.
It's a BASS.
Next time Slash asks for a guitar, bring him something with 6 strings.