Flips Or Tubes For Minor Doubled Dies?

I'm trying to get my collection into a more organized form so that it will be easier and more fun to go through and look at. I have a small handful of minor doubled dies I've found from coin roll hunting, and I'm trying to decide if they're worth putting in flips, or if I should just throw them in a tube. Here are a few examples for reference of what we're talking about.

Horizontal bar along top edge of middle-right window


Vertical bar along right edge of middle-right window


Doubling on nostril


Doubling on saddle horn


Doubling on saddle horn


Double earlobe