You know, its quite a list and there are lots of things available to address virtually every step of the signal chain from the wall to the ear. I just started writing stuff down and its pretty amazing how much there is...
Cones and spikes for draining the vibration out from the chassis whatever the source
Rubber/sorbothane like substances for isolating the chassis from sources of vibration
Rubber/sorbothane materials for damping cable ends which are said to be microphonic
Things like BlueTack for coupling component and base (esp speakers on stands) to minimize vibrations - some of Herbies stuff fits here
Dynamat and other damping materials to put inside the chassis or enclosure particularly on long metal or wood spans to absorb vibration - Verastarr also has a cool material
Other damping materials for use specifically on tubes to drain and isolate them - includes brass, Herbie stuff, titanium and ceramics
Specialized damping/absorbent materials like EMI shielding tape from 3M and Stillpoint ERS sheets
High tech wall receptacle cover plates and plugs by companies like Oyaide that seek to eliminate structural born vibration from affecting the flow of electrons. Adding to this is the use of ceramic and wood devices to lift cables from the floor where they can be affected by structural vibration, static and the family cat. Consider too that power conditioner manufacturers all recommend isolating their units with cones and bases...
Beyond the spikes and cones that come between object and surface are a whole class of vibration absorbing isolating devices including granite, wood (typically maple), sand, inner tubes and composite materials by companies like Symposium, PolyCrystal and Silent Running which uses acoustic damping techniques derived from those used aboard nuclear subs.
Then you come to the whole subject of the surface that the component sits on - which includes the subject of stands. The Mapleshade Samson and the Grand Prizx Monaco are two that point at the range of possible solutions
In addition there are speaker manufacturers like Green Mountain and NOrh working with cast marble and similar stone-like materials who seek to eliminate vibration by making a container that doesn't vibrate.
Add to that the use of granite, brass and other dense materials for mass loading from the top and of course the irresistible Mpingo dots, Shakti stones etc and you have a monument to man's ingenuity...
Which brings us to the final WAF frontier of room treatments where the waves we have so carefully formed wreak havoc in our undesigned, undamped environment - increasing the need to isolate everything from them too LOL
