IIRC, Tom Gillette fka Sam Tellig once suggested readers try three pennies. It was mostly tongue in cheek that at a cost of six cents coming out of your personal liquidity, why not? I felt silly doing it but tried it. Back then I had B&W M805's with JPS Labs Golden Flutes equalizers in line between amp and speakers. I had lead and sand filled 100lb speaker stands. My amp was a McCormack DNA.5 "Full Monty" and my preamp was an Audioprism Mantissa. I heard a difference of exactly de nada. Bupkis.
Something on top of a speaker=okay?
We have a (toy) stuffed dog laying on top of one of our floorstanding speakers. Does this affect the sound?
Do I need to find an identical breed of stuffed dog to put on the other speaker to maintain balance? Does it matter if it's a dog, an elephant or a cute bunny? What about the color? We can dye the dog's fur if that improves the soundstage.