I ran across this great video today, it’s actually a couple years old. This video is from Alternative Drummer on Youtube. He has some other great videos about apartment drumming you should check out.

He goes into a lot of detail about the Alesis Nitro Mesh kit, but at the beginning shows off how he set up a smaller sized drum riser with some particle board, dryer balls and rugs. The end result is quite good. He has to deal with a hardwood floor, which can be the worst for drumming, and the noise isolation is excellent.