Apparently, the Wacky Packages are making a comeback of a sort. It began when a small number of the Wacky images showed up on Pogs during that 1994-95 crase (sheesh, what were Pogs but old-fashined milk bottle cap lids without the milk bottles!), and thanks to the Web people who got a bang out of them (blowing up their dinner with Bam! no doubt) are hunting them down and collecting them again. Turns out I was right the first time, sort of: I did remember having Wacky Packages in fifth through seventh grades - the original Wackies were die-cut card cutouts, not stickers such as began coming forth (beginning with the original Wackies images) in 1973...
And why not!

Ya just cain't beat a good Hostage Cake!!
Wacky Packages -- oh the memories! And I really enjoyed the gum, (although I can't say my orthodontist was all that thrilled with it).