DH won't allow it, but I used to have a glow in the dark fishie <>< symbol and my graduation tassle. Occasionally a yankee car jar too! It's one area where I allow DH to indulge is neat freak side! We share the car so I guess it's fair. But then the car he usually drives is smelly to me.....so I guess if I take that car for something I better take some air freshener or roll down the windows!