I primarily used homegrown stuff. I find that it is often too difficult to make a prewritten module fit my world and the situation, though sometimes I do it, about 15% I would guess.
I have run the following 3e/d20 adventures as part of my game:
- The Ghost Machine (tweaked so that the doom machine has not been built yet; I am working it in later in the campaign.)
- Sundered faith (modified to become a temple of my drow death deity.)
- The Sorcerer's Citadel (the sorcerer became a deceased member of the arcane alliance, a villainous group in my game.)
- I will probably run Kambranex's Machinations this weekend, tweaked of course.
- I ran the dungeon of the fire opal, adjusted to be a fallen order of one of my own monkish orders.
- I ran RA 1 & 2 on off nights.
I have also nicked maps and stat blocks from some adventures.