I have a four level cheapy shelf in my storage closet at home. It's pretty hideous, but since it's tucked away and mighty helpful, I use it to organize the masses of junk in there. This includes medicines, bedding, books, craft supplies, iron and ironing board, etc. Yeah...that closet.
I know you have one. And yours might look a little more organized than mine. I had all of my cards scattered on one of the shelves. This led to cards sliding off and slipping all over when I wanted to send one. Hey, at least they were all in one place!
A few weeks ago, I was looking around the edges of Hobby Lobby for clearance finds, and came across this adorable vintage floral print photo box. At less than two dollars, I couldn't pass it up, but needed a use in mind for it. MY CARDS! I took it home and immediately gave my mess of cards an organized resting place.
First, I sorted them in to occasions: Thank You, Congrats, Hello, etc. Then I placed them in my lovely box! Now, all of my cards sit nicely organized on my ugly shelf. Next time you see a photo box on sale, snatch it up!