I came across these earlier and they just make me laugh. The standard DS looks pretty crappy now that its svelte little brother is available, so what better way is there for it to fight back than some mech armour for it? As mad as they are it looks pretty badass and you know it could kick the crap out of a DS Lite in a fight.
If you want more take a look at some contest designs here, all of which are fairly ludicrous apart from number 8 which looks like the designer couldn’t be bothered and just stuck a load of shit to it. Genius!