Your homemade tweaks?

Boos Block cutting boards are the best maple platforms out there at much less cost. Just put any feet you want on them or use blue tak?

happy-sad balls from Arbor Scientific. Throw away the "happy" balls. The "Sad" balls absorb resonances amazingly well. They squash down, so nothing is needed to hold them in place. All you have to do is drop one to see how effectively it absorbs energy. They hit the floor and stay there, no bounce - apparently the energy is all dissipated as heat. I have not been able to find any source for the raw material.

Thanks for the detailed information on finding and installing the antistatic foam.

To help w/the thin cover on my Rotel CDP I first covered the entire cover (side>top>side) w/one piece of dynamat. I then cut an old Rega plinth to fit the top & after plugging the holes w/filler, put that on top then added some old lead leg weights on the plinth.

I have commercial absorption/isolation stuff underneath & the combo of everything together vs. nothing at all has helped lower the noise floor, which has resulted in letting me hear a little more detail & layering plus a slightly bigger soundstage.

I've done some stuff inside the CDP too but just the weight on top by itself at the very least keeps my somewhat large DIY PC from moving it off the Herbies grungebuster balls.