When I was in 5th grade, the big rage was Wacky Packages.
A rectangular stick of stale gum with stickers of gag consumer products was a pre-adolescent kid's entertainment center. I remember walking up to the Woolworth's and buying them on half-days of school, and then trading them with my friends at school the next day.
There are some great Wacky Packages websites out there. I got the following photos from John Mann's Website. I'm sure the originals are worth 'millions' today. Some of my rememberances: