I do this after eating dinner, before going to bed. I do it for the door locks of the house, the knobs/dials of the stove, the gas valve behind the stove, the fridge door (giving it a push instead of pointing at it), the sink (to make sure it's clear of dishes), the windows.

I also do it for my car locks and windows to make sure they're closed and locked before leaving it. I'll make a point of it to touch the windows at the top edge and pull the handles.