Neeedd some help pleaee?

Ok My Gf gave me these clues to something shes getting me for my b day, and i can NOT figure it out >.< here are the clues: 8 letter word, Starts with the letter S and ends with the letter S, its plural so its more than one, still 8 letters though, Something Obvious, YOU CAN NOT EAT IT,So its NOT skittles, You can buy it at target, rite aide, and Safeway, Comes in a bag, its cheap, and you have to buy more than one or you look stupid if you buy just one. My b day is on the 19th of this month so i have a little while to figure it out :)