My computer is right up against the wall of the bathroom and right next to the toilet.
I was thinking of running the water from the lavatory cistern, gets a good few changes during the day
and should be nice and cool, you'd have to make sure that the pump inlet pipe was low enough in the cistern to always have water when the toilet was flushed..
But the missus isn't having any of it, played hell when I cut a hole through into the wall cavity for a bit of cooler air.
Cheers
Chris.