I have the opposite problem. I keep waiting for people to buy the stuff I have my eye on so I can stop thinking about it. The Blazing Fireburst VIP in the showcase right now is a great example. Someone please buy this guitar so it will stop haunting my dreams, and be sure to get a rosewood neck with ebony fingerboard and Fralin Humbuckers with the Jimmy Page wiring schematic.
As far as the obsession of building more guitars goes here is a list of just the Strats I'd like to build:
A Red Alder strat with Active EMG's ala David Gilmour
A tribute to Clapton's "Blackie" strat with the midrange boost circuit
A Swamp Ash / Maple Neck Strat with an Alembic Stratoblaster ala Jerry Garcia's "Alligator"
A psychedelic Painted Left Handed Strat tuned down to Eb for playing along to Jimmy Hendrix Records
and my own custom Strat design: Quilt Maple on Mahogany with F-Holes, Rosewood Neck with Ebony Fretboard, Duncan Rail Pickups, and a CAE preamp...
and that's just the Strats, don't even get me started about the Tele's I want to build