Good idea. I do bring along a bag to put my dirty clothes in and put them in with my clean clothes so no extra room needed but never used as a pillow. My pillow squashes down pretty good. My brother uses a air pillow which rolls up pretty small. I forgot I have a self inflating mattress that is a foam mattress that expands with air and keeps me from the hard ground and goes on the luggage rack. VERY nice to have.!!