I recently opened my launch Xbox 1.0... and man, it was a huge mess in there, from all the mods I tried to do to it back in the late 00's. I put in an Xirc2, added a network and HDD activity LED drilled through the sides of the front of the case, split the TSOP with a external switch, put a remote receiver IR into it internally, and added a 4PDT switch so it's on controller port 4, until you plug in a controller.
But I did this back in the mid 2000's, with a $15 radio shack soldiering iron and barely any skill. There's hot glue on the motherboard to hold the wires down (cringe), the wires I used are all too big it or too small gauge, cold soldier joints, etc. The console boots, but then crashes during the intro animation.
I remember that after I added one mod too many, it stopped working, back in the day, and I just tossed it in a corner. The case didn't even push down properly because of all the wires, and I remember if I didn't push it down tight, it would boot longer before crashing, haha. When I have some time I'm gonna try to restore it, although mostly for sentimental reasons and not because I'll ever want it to be a daily driver again.