Windex is AWESOME... and a hell of a lot cheaper than paying $3 for a tiny bottle of thinner from any of the major paint brands.
The blow dryer is another good point CS, I didn't start using that on figs until the last 6 months or so. Definitely cuts down drying/waiting time. I recall using it in Art class back in highschool and college, but I never thought to apply it when I first started doing customs.