Uh, yeah, so mostly I throw them in a box. LOL.
But your post here reminded me that I DO have a binder for some of the cards I am extra proud of. I have page protectors from
Crop Stop. (That's a big pack of them, they have some smaller packages.)
I don't believe I've ever bought them straight from Crop Stop-- I recall getting them off of eBay, although Crop Stop may have been selling them there at the time-- so I can't vouch for the store itself. But I did check and Crop Stop's blog was updated today, so that's a decent sign.
But the page protectors are nice and in theory fit in a regular three-ring binder but I bought one with an extra long cover. (It's not super extra long, just enough.) I just bought it at Office Max. You could just get those binders (mine's white) and start bookending them on either side of your turquoise ones.