The above linked article would be great for when we are back to a realistic normal. It shows the best way to drive to hit all of the national parks. It is a long drive, but it looks like fun.
I did see an ad for a keyring that held all of the little souvenirs from each of the parks you’ve visited. It was cute, but I can’t find the link again. I’ll search again when I can actually visit, and not travel virtually.