My parents subscribed to several magazines when I was a kid and any time a new one arrived I would shake out the subscription signup mail cards and make paper airplanes. They were small but something about the thickness of the paper made it very satisfying to fold and the planes fly very well.

I guess those cards must still exist but it has been ages since I have read a real magazine. I had a couple of dumb subscriptions in college but do not think I have ever had any since. Should consider it for our kids and to get me off my phone.