List of things that are quiet

Quietness is measured in Shushes, the unit of someone asking a room to be quiet, which is very loud.
List of things that are wet
A complete list of everything that is wet, compiled by volunteers who are now also on it.
List of things that are flat

A list of flat things, measured with a ruler, which is also flat and was excluded for a conflict of interest.
List of things that are round

A list of round things, from circles to the number of times you have gone round a roundabout looking for the exit.
Standard of Lumps

The Standard of Lumps classifies a hill as smaller than a mountain, after 26 years and one fist fight.
List of things that are heavy

A list of heavy things, ranked from very heavy to a bag of shopping carried more than 400 metres.