Thanks to Mapnerd for this idea! Do you have any items to which you have a particular brand loyalty? Do you always get Charmin toilet paper (duh), or never buy Ford/Chevy, etc.? What won't you get generic, and what will you?
I only buy Heinz ketchup. My wife can buy some other brand and put it in an old Heinz bottle and I can tell it is not Heinz.
Samsung TV's, Goodyear Wrangler DuraTrac tires, TeraFlex suspension, Woodhouse, Double H boots w/ ice sole, Diesel Jeans.