I saw this idea on pinterest. This is a really neat idea that you can do very easily. All you need is manila envelopes and a front/back cover for your book. You could use this for a variety of things from organizing bills to keeping old birthday cards and Christmas cards.
I personally would use this as a way to hold onto old cards or maybe even a keepsake for my kids art. You could make one for each member in the house as a keepsake. Another great idea would be to add the persons name to the front of the book and decorate each folder for the specific thing you are keeping in it. These would make great gifts.
Click the link below to find the original post on how to make this awesome book.