http://www.pimp.biz/compliantpromo/
Theres some zips that may not be in the site list I posted, but banners and fpas are in there..
Yeah Alex, I've considered doing that on my own.. I think with ImageMagik you can do that, or with the netpbm programs that most servers should have on them.. or with a photoshop droplet or action or something. It might be something we'll need to do for our own sites like you say as a filler until more are completed. I have put in a request for more text-only promo materials.
Here is a zip of some site reviews. You will need to edit them, but it's one more thing I can offer at the moment.
http://stats.pimproll.com/pr-site-reviews.zip