I'm about to throw away three 12.5" bike inner tubes filled with mineral oil, since I've found something I think beats them and is hugely easier. Make a shallow tray, say, 20" x 15", with sides 2" high. The bottom should be hard. Make a plywood sheet 19" x 14", and nine small marbles and three broccoli rubber bands. On the bottom, place three marbles each within the three rubber bands and locate these in an equilateral triangle on the bottom of the tray. Place the plywood sheet on top and your component on it. Variations are possible, but the general idea should have come across.
Best vibration tweaks
The components in my system rest on a Lovan rack (not filled). Until recently, I hadn't considered doing much more to control vibrations in my system. But I've noticed that their are some relatively inexpensive (a dangerous phrase in our hobby) tweaks in this department that are available. I'm curious to know what experience others have had with things like Vibrapods, filling their stands with weighted material, airmats, Audiopoints (?), those half-globe gel balls (don't know their name), etc. If you've tried them, how much of an improvement (if any) did they make? Several of these appear to be mutually exclusive, so which do you recommend most? Thanks for your input.