what's the best use for a Late 2005 PowerMac G5?

[decay]

I got a free 2.3 dual core G5 tower that was going to the dump.

http://www.everymac.com/systems/apple/po...l_2.3.html

Given its limitations (PPC, max OS 10.5.8), what's a good use for it?

I know it pulls a lot of wattage and generates heat; maybe I set up a file server in my guest bathroom this Fall & Winter when it's cold?

All kidding aside, I'd like to see someone local get use out of it.