This thread has reminded me that I desperately need to get back into playing guitar...and fast.
I did a shit-ton of custom work on my LP and Tele. Changed the machine heads to locking heads that actually had built in string cutters.
picture of the heads:
The black bolt on the bottom screws on, locks the string in place, and when you start turning the key, that sharp edge right below the hole the string goes through will cut excess string off. I know heads like these are pretty common, but that was my favorite mod. It made my life SO MUCH easier.
Changed the humbuckers. New neck and fret boards. Paint job on the Tele.
I think with the money my fiancee and I get from our wedding, I will have to buy a new guitar and pimp it out again. Unfortunately, three years ago, the local pawn shop became the proud owner of my 5 guitars (Gibson and Epiphone LP, Fender tele and strat, and a Epiphone SG) and 3 amps (Fender tube half-stack, classic Peavey 30 tube amp, and Behringer V-tone GMX212), thanks to my heroin addiction.