Modern standalone (HD-based) DVR/players are cheap and feature-rich enough, but their embedded OSes are are often very "basic".
Here's en examble of a cool box with poor soft:
The idea: is it possible to port KOS on it (or similar players) ?
Do you agree ?
Actually, this sector is a consumer-aimed branch of more "serious" industrial embedded devices' mainstream.
It usually inherits a PowerPC or other cheap and straight-embeddeable platform with a U-boot bootloader and a minimalistic Linux engine.
In principle, we might build something like this when (and if) a stable "Embedded-KOS" version appears.
But I'm not sure about production price: x86 micro-ATX platforms are usually more expensive than those mini-boards