I am such a butter brain, I always forget to bring my reusable bag with me to the supermarket! I was at IKEA today and bought a really L-O-U-D one (bright red with a busy pattern) for $1.50. I figured that way I would see it and remember to take it. I'm going to try and remember to put it right back in the car after I've been to the supermarket. IKEA also sells zip top bags for a sack of cat box filler, made from recycled materials. I like that idea because it would make it easier to get the sack from the car to the closet.