tampons
alcohol
LAUNDRY DETERGENT (i got dryer sheets for 59 cents when i was on vacation and figured, oh i'm on vacation and they are cheap and i probably won't use all of em nor will take them home... NO THEY SUCKED. i am also allergic to a certain generic laundry detergent that they only sell at my grocery store.)
bandaids
most everything else, i will buy the generic brand. especially, aspirin/over the counter pain meds because they are all the same.