Yeah, don't overload!  Gotta pace yourself!

Vue includes some nice building materials in the Special Effects, building folder.  The ones shown as cubes in the library will of course work best on cubes.  There are some for cylinders and spheres.  

I also highly recommend all of the modules and building packs from GeekatPlay.  Great stuff and really nice priices.

LVS - Where Learning is Fun!  
http://www.lvsonline.com/index.html