Hidden Hair Stresses

I use a satin pillowcase every night.  Although, it has recently dawned on me that when I take a little cat nap on the sofa I'm not nearly so careful where I put my head/hair.  I plan to cover at least one sofa pillow in hair friendly fabric (part of the pleasure of the nap is its spur-of-the-momentness---do not want to "prepare" the couch with a bed pillow!!).  The question for this thread is--what other innocent habits might one pick up that do not enhance otherwise wonderful hair-awareness?