If you haven't read about Barry Diament's isolation platforms, there's a lot of info available on them online. They're truly amazing. For sale here are the "balls" and "cups" necessary to create the platforms.
12 plastic cups with sticky tack for each cup
12 steel balls (they show signs of oxidation but they are cheap to replace on eBay if desired)
Also included are 6 different kinds of outlet faceplates for experimenting with. Faceplates definitely make a difference in my system.
SHIPPING IS FREE in the US via 2-3 day service. No extra charge for PayPal.
NOTE: The metal cups in the photo are not included in this sale.