The Jif To Go tubs have been around for a number of years, they recently added a couple of new flavors – so they have the regular, Chocolate PB and their Natural:
8 tubs to a box, each tub is 1.5 ounces, giving a generous serving of peanut butter. Personally I would avoid the chocolate as it contains fully hydrogenated fat, the Natural though gives an alternative to the expensive pouches of PB on the market (and honestly the tubs are easier to get all the butter out of!).
Find in grocery stores and big box stores for $2 to 3 a pack.