Don't know if you've been going around and asking for submissions to the archive, but you should! (Done it before - easy to do). Some suggestions just off the top of my head:
- barbana who did this http://www.livejournal.com/users/barbana/126967.html#cutid1
- goss who does so much incredible work (I'm not sure how she'd feel about archiving somewhere else but it doesn't hurt to ask). http://igoss.com/ Gorgeous manips, wallpaper, covers - of particular interest would be the ART sections which has some great sketches/drawings (noticed you didn't have any submissions yet - Barbana also has some drawings but don't have the links sorry)
- my Other Half fleurbleue. You've seen her stuff, I'm sure you know what to ask for but I love this especially http://fleurbleue0.tripod.com/fanart/id5.html
- eisakay. Some really great stuff - check out the Absolut ads!
http://homepage.mac.com/eisakay/main.html
- Osianna. Not in love with everything she does but she does have Pete.
http://www.ditb.net/clexytales/clexmenu.htm

I know tons of other artists I can link you too, but let me know how Goss feels about archiving work with you - the people I have in mind are all uber-talented like her and run graphic-intensive websites (lots of collages like Touchstone's) so not sure how'd they'd feel about it (I'm guessing they've feel the same as Goss).