In a pinch for how to store your non-acid free items, such as cards, newspaper articles? Have I got a solution for you... Close To My Heart Memory Protectors Flip Flaps in various sizes and assortments on page 122 of the idea book.
Another way to create your own is to use plastic sheet protectors sewn to the exact size you need. I did not have any Flip Flaps on hand for the page I was trying to complete, so I grabbed a sheet protector, plugged in my sewing machine and made my own. Once they were sewn, I used Terrifically Tacky Tape to adhere them to my scrapbook layout. Now my non-acid free memorabilia will be kept away from my photos.