I know for a fact that NKOTB are still around because some high school friends of mine recently posted that they went to a concert recently. I think it is safe to say that it was a significantly smaller venue than back in 1989 though.
Trapper Keepers were the shit. I don't imagine they are still around. I mean, if i saw one tomorrow i would buy it, especially if it has Milli Vanilli on it.
I think my wife went to see them when they were touring with some other boy band. I can't recall though. Yeah, I loved all the pockets and places to put your pencils and stuff. They were pretty awesome.