Filter Sock Silencers
I saw this item online called a sock silencer. It is designed to spread the water before it falls and reduce water noise. There is a 1 inch hole in the center that is designed as an overflow, if all the small drain holes plug.
Conveniently, I used the leftover round filter sock holder cut outs. First, countersink each hole, then drilled through the counter sinks. It turns out there is minimal benefit for reducing water sound, but they make a good filter for snails and larger debris.