Isolation platforms for Cube Audio Jazzon speakers

Townshend platforms are clearly excellent, but are there any more affordable alternatives?  I can't drill into the bottom of the speakers.  At the moment, I have the speakers on MDF pieces of wood supported on the corners with rubber/foam/rubber clad pads and really have no complaints, but I know how much SQ improvement I got with Iso-Acoustics GAIA footers under my Spatial Audio speakers, but have no way to mount them on the open bottom of the Jazzon speakers.  Thanks for any suggestions.