Peanut Butter Boppers. For those who aren't familiar, they were logs of peanut butter rolled in crisped rice and mini chocolate and peanut butter chips. I think they may have made a comeback at some point, but I never saw them...they probably didn't taste the same anyway, as often is the case.
I concur with Pudding Pops, Magic Middles, and Tato Skins. Sigh, the 80s had the best snacks...
However, one thing that I've been mourning the loss of for years, but recently came back, and still tastes as good as it did in the 80s...New York Seltzer!