This is a late reply to the Splork's request for MSDP ideas.
I was thinking NPC in room, maybe just two or three keywords per mob and maybe the number of that mob. Something like "male-kobold",2,"kobold-youth",1,"female-kobold",3.
Also someone earlier jokingly suggested weather, but weather is helpful because it tells you whether you are indoors or not.
-2 cents