I've mentioned that I sometimes bought a few packs of a new issue, especially a novelty, and got bored while opening them; then, I would keep the remaining ones unopened. It looks like back in the day (in 1990, presumably), I bought three packs of Topps Heads Up! to check it out. I opened two, and left the one pictured above unopened. Each pack contains one "pin-up," as the package says. It has a suction cup, and also an adhesive, I think, on the back, so that you can have your favorite player's floating head on your locker (as pictured), bedroom wall, or wherever.
I regretted buying these pretty quickly. The two I opened turned out to be Craig Biggio and Bo Jackson.
Craig Biggio's head.
Bo Jackson's head.
Not sure what else there is to say about these. I didn't pay much attention to Biggio at the time, since I didn't follow the Astros very closely. I think you couldn't help but pay some attention to Bo Jackson back then, but then he barely played after 1990.