I've recently started down a bit of a path from when I stumbled on my original Xbox at my parent's house the other week, and did a quick google to see if it was possible to mod one without a chip. Turned out it actually was, using a somewhat arcane process involving a PSP and copy of Tom Clancy's Splinter Cell.
Now I'm looking into attempting a hard drive replacement as the OG Xbox one is tiny, which is a bit more involved - you basically have to hot-swap the replacement drive with the DVD drive while the console is running in order to format it properly, although thankfully this doesn't seem to be beyond my limited technical expertise
I've soft-modded pretty much everything I've owned since the DS, but this will be the first time I've really messed with the hardware side of things. It's exciting! I'm having to order Torx screwdrivers and everything.
Tell me of your mods, what have you done or are thinking of doing?