I collect pretty much everything, as well as stuff that's not cards.
My daughters have been interested off and on in cards, not a surprise since they're 3 and 5. I gave my oldest some of the security inserts from one of the modern sets a couple years ago. I figured they'd make good drawing materials. After a few minutes she came back and said " daddy I have a card for you" I figured she had found either a card that got away on one of her adventures in making me put the box I left in reach back into number order, Or had one of the cards I'd given her. Yes, they get all the off condition 80's stuff too!
But what she had was a card she'd drawn for me. Not bad, it had a border, and a figure with a bat, sort of. and even a scribble that might have been the team name. It also had a few creases and a stain.
Still, it went straight into a toploader
She collects stamps too, currently red and green ones she puts into the book I made her. They're organized in a checkerboard pattern, making a surprisingly nice collection.
She hasn't asked for sports cards, but has asked for a few packs of my little pony cards, and frozen stickers.
The earliest mention I can find of collecting stamps being a dying hobby was from around 1892, and complaints about "unnecessary modern junk " go back at least as far as 1869! considering that's only 29 years after the first stamp was made I figure the card hobby is doing pretty well.
Steve B