stacking components without leaving marks


as we all can see on audiogon, this is not as easy as it first appears. has anyone found a good solution (DIY or commercial) that can go under the feet of a component LONG TERM that can allow it to be safely stacked on another component? something that wont scratch or discolor the bottom component?
ratso1
Paper works. I assume that you are going to use stock rubber feet. I stock components too, but I use different feet under each component; the difference in sound when using good feet is quite big.
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Felt pads for furniture works. But I do like Lizs comment.

BTW... Don't recording studios stack most of the equipment.
Elizabeth, Not true. When you stack components you are mass loading the component on the bottom which will affect the sound.
Felt pads for furniture works. But I do like Lizs comment.

BTW... Don't recording studios stack most of the equipment.