I think the first collectible I ever actually purchased with my own money (meaning my allowance...) may very well have been a button from Star Wars. This was back in 1977, and my favorite character was Chewbacca. Because he was kind of like a monster, I guess, and I was a King Kong fan. I was in the second grade when I bought my prized Chewbacca button at Englishtown Flea Market. After I bought it, you couldn't get me to take it off.
Over the years, I collected more, including ones from ALF, Space: 1999 and the like. When I was in high school, my sister bought me a personal favorite: a "Spock for President" button, which I guess is sort of the equivalent of a political button, right? I mean, imagine how much better our country would be if Mr. Spock really were President. If the decisions he made for our well-being were based on principles like logic, peace, infinite diversity in infinite combinations and the like. Not only that, he plays a mean game of three dimensional chess.
Anyway, "buttons" are the toy of the week. Anyone out there collect 'em? I'm guessing they're probably not as popular as other sci-fi collectibles because buttons are cheap, easy to create, and probably not even "official." Still, they're fun.
And I do own a political button, by the way. It isn't pictured here. But it reads "Jane Wyman was right..." Hopefully, someone out there understands what that snarky remark means.