Air sampling results. Bathroom, left open for about 2 hours.
The medium has already dried and even started to evaporate (that causes the dendritic-like pattern).

At least 5 types of fungus and 1 bacteria (the little colony on the right).

Want to try something like this at home? See some media recipes & howto’s here or here. And don’t worry, you won’t ever get clear air sampling plate - the spores are everywhere.