Odd as it sounds, a roll of toilet paper in the car is more practical than tissues or napkins. Napkins can fall out of the glovebox or blow around. Boxed tissues take up more space than necessary. Toilet paper can be used as a "bib" if you're eating lunch in the car, as a napkin (Take as many sheets as you need), or as a tissue (if your cold is really bad, just use more); or for wiping a foggy windshield or wiping up a big coffee spill. In some cars, it may slide right over the shift lever. And, it's amusing to see passengers' reactions!