Cheap tweaks...What would YOU reccomend?

You could put a mystery bag(but then it would affect the sound)over this, and charge $150/set(3 of course)and not feel guilty. In my current setup, this opened up a window on the midrange-with voices to die for. On my Nuforce amps, I put an Eaglesound myrtle block with isonode(small) under it. Three per side. I just bought 4-inch Mapleshade amp stands on Audiogon(thanks Copperbop), and tried putting my Nuforce 8.5V1's directly on it, then with Eaglesound myrtle blocks between amp and stand. Previously, I had tried isonodes alone. Anyhow, with the myrtle blocks right under the amp and isonodes between blocks and stand, all of a sudden we get music. No contest compared to the other two ways. It's so good that I'm skipping the approved brass cones(for now), and will be looking into speaker supports. BTW blocks are $3 each, and isonodes cost $15 for a pack of 4. I believe I mentioned this tweek to both manufacturers a few years ago.

Pinot Noir works wonders.

I can't remember if I had already suggested that previously.

Fully agree, you need to have at least 2 glasses to warm-up and it will everything make sound warmer alternatively you can try a Humagny

I find Canadian Club on the rocks works exceedingly well.
Just seems to make the dynamics pop.

Honestly, I think the cheapest tweak is to buy a better whatever component you're trying to tweak. Between the power cords, shelves, cones, blocks and other bullshit, you end up spending more than a better "whatever" in the long run. That aside, I really thought the Audience single-outlet power conditioner (ARp1?) made a really positive improvement in my system. About $300 and change used. I guess this is "cheap" in the world of high-end. I plugged it directly into the outlet and attached a $50 Wiremold strip to it.