Browsing the aisles of my local Coles when I found an end full of set top boxes at very cheap prices. Standard Definition $10 (MXT Brand) and High Definition $20 (Onix Brand)
Had heaps of both.
The Onix HD STB was very small, it had HDMI out as well as PVR function and multi media playback via usb 2.0. Didn't really examine the $10 too hard, as it seemed to be a bog standard stb.
I know all tellies these days have built in digital tv, but i'm sure there are plenty of Rank-Arena's out there that could be salvaged a bit longer.
Photo of Onix stb.
http://upload.ozbargain.com/2012/04/03/8137_20120403_201038.…