Office Supplies > Business Card Books
Just because our title says 'business card' books doesn't mean you only have to store business cards. With these books, there's enough room for those Pokemon and baseball cards too! To make your mom happy, put all of your collected business cards in the first few pages. Then hide your Pokemon and baseball cards in the back. After the fourth page, she'll stop looking anyway.
Unless you have the Mew holographic or a Mickey Mantle baseball card that you should totally show off, you don't really want to highlight all that money you spent on cards. This writer would approve, but your mother might not. Placing all of those business cards, whether they are from your company or not, will show how productive you "really" are.
The best part is these books will keep you totally organized in any way you see fit. Alphabetical by last name or last year played for baseball cards and by type for Pokemon cards (since water and fire Pokemon don't mix of course).
Business Card Books hold 120 cards, 160 cards, or 600 cards! The 160-card business card book has removable pages for further prioritization!