A Running Crab Spider
AKA Kidney-spotted Psyllobora
These critters were surely unwelcome guests under the tail of a damselfly: http://www.inaturalist.org/observations/252708
It is fairly common for pond mites to hitch a ride to whatever water body the damselfly might choose to lay its's eggs.
I took this damselfly for further examination primarily because of it's severe infestation with aquatic mites (see my next observation). But I was intrigued by the scary "prey's eye" view of it's mouth. Too bad it couldn't devour some of the mites hitching a ride on its tail.
perhaps the common P. pruinosus, according to the always helpful v. belov of BugGuide
Not actually found in a house, but on the gravel by the Russian River.
A type of Broad-nosed Weevil.
Fungus gnats. The distinctive black-headed larvae abundant in mushrooms belong to this family