Roland NE-1 Noise Eater:

The NE-1 Noise Eater is a small sound isolation foot designed to be used with a kick pad and hi-hat stand in a V-Drums set along with the companion NE-10 Noise Eater (sold separately). Thanks to a unique rubber damper structure, NE-1 units placed under each leg of a kick pad and hi-hat stand dramatically reduce the transfer of noises and vibrations through the floor caused by normal playing. When the NE-1 is used in combination with NE-10 units placed under kick and hi-hat pedals, these products provide a simple and convenient way for users in multi-level buildings to enjoy V-Drums freely without disturbing people occupying rooms or dwellings below.