Even better, why not stick with Zack's usage of the shorter vernacular term 'crud', standing here of course for 'CleanRoom Undesirable Debris'!
Thank you very much, jsmaje, for completing my poor and fragmentary suggestion!
CRUD: 'Clean Room Undesirable Debris'
An abbreviation, profound, not too short, ambiguous, mystic ... In other words:
This term perfectly complies with the scientific (bad) habit to express almost everything in the form of abbreviations under the pretext of objectivity, as we learned here
and could as well help to fill in some blank in volunteers' "My events" pages.
Wir leben in einer Zeit vollkommener Mittel und verworrener Ziele. (Albert Einstein)