if the clip & paste feature would work for me, I have a ton of links for the small stuff. google diorama parts.
scale modeling by chris
scale equipment
also check out the "gee-gaws" thread
you'll have to do some hunting.
you may consider building to 1:24 scale. that way, an inch will equal 2 scale feet. may make your life easier along the way. I doubt anyone will criticize the difference, and if they do, don't invite them back again.