Check out Herbie's, good prices, excellent products.
Vibration control: isolation vs transference. Different techniques yield different results. Much depends on how resolving your system is. For my amp, I use Symposium Rollerblocks upside down on a Symposium Svelte shelf. For my laptop and streamer, I use the Mini-Stillpoints on a Symposium Svelte shelf. Symposium’s Fat Padz or Point Pods are less expensive and work well. IME, rubber feet muddies dynamics - even with a laptop.
@g_chops I've been using a combination of the vibrapods and vibrapod support cones. Basically I place each vibrapod on the rack, stack the cone facing up, and stack the component on the tips of the cone. The difference is night and day, especially with my tube equipment, and the sets are really affordable. I'm sure there have been tons of vibrapod discussions on the forums so give it a search!