Tom holders: the seller had RIMS-like brackets custom made for the 13", 14" and 16" toms, so mounting was easy for those.
But the 12" came without any mount, so I bought this:
http://www.gibraltarhardware.com/?fa=partsdetail&curcat=2&bnd=11&cid=120&sid=669&pid=2135
I had to work the adjustable rail a bit for it to fit on the 12" but it now fits perfectly. Not the most elegant solution, but works just fine.
When playing toms, I usually only use the 12" and 16" shells, as I find the 12" to sound richer than the 13" (probably due to the large center re-inforcement ring).