I have a metric shit ton of old Studio Calico Project Life cards. You know, the rounded corner ones. They've been sitting in a plastic bin in the bottom of a dusty old box FOREVER. I don't use cards with rounded corners anymore but didn't want to just throw away the old cards. 

About a month ago I was going through stuff and decided to hack off the corners and use some of my paper stash to make new cards. Because, why not?

Seriously, why didn't I think of this earlier? So many awesome cards that I haven't been using. Haaaaaay.

And as you can see, they turned out pretty well. I just used some runner tape to adhere the cards to the paper. 

Now I just have to finish the rest of them! All several hundred :)