Is anyone using sand boxes under their speakers ?

Damn you Timtim! Now I have another DIY project to schedule.
Seriously though, I raised my speakers up a nearly 3 inches with some plinths made from MDF, spiked to the floor with sorbothane pads on top. The results with both Thiel CS-1.6s and Meadowlark Audio Kestrels was very positive.

I raised my Hales Rev 3s using concrete pavers (12" x 12") which I painted black. Under each are four hockey pucks. The Hales with spikes sit on top. Not only did i raise them up where I wanted, the bass response tightened up as well. And the cost was well... cheap.

All of my components are sitting on Brightstar platforms except for my power amp. However, I have never used the platforms as speaker stands. Mapleshade records sells maple speaker stands, but they are a little pricey.

http://www.mapleshaderecords.com/audioproducts/plinth.php

If you are interested in maple stands, I would consider just purchasing a pair of 3-4 inch maple cutting boards for a lot less than Mapleshade. I am actually using one for my power amp with excellent results. Checkout this web site:

http://www.butcherblockco.com/choppingblock.html

I quit putting my speakers in sand boxes years ago. Every cat in the neighborhood was in there with them.

Thanks for the responses. I'm going to go ahead and make some sand boxes and see just what happens. I'll report back in this thread in a week or so. I've never read a single negative thing about Brightstar Audio's products, so I can't really imagine things changing for the worse, and they are all about sand filled isolation devices.
PS: No cats allowed !