Organization

As I was thinking about today, what I was going to type and that I should really cut and file some coupons.  I realized that one important thing about couponing is organization.  If you know you have a coupon for a certain item, but can't seem to find it, the coupon is in a sense useless.  So how exactly do I organize my coupons?
I'm going to take you back to when I first started couponing I had a small white, index card holder box for my coupons.  My father had a larger black box to hold his coupons.  His plan was he would eventually have enough coupons for the box.  Well his couponing was short lived.  I grew out of my coupon box and into his.
Last year I started growing out of my box.  I happened to find some clear boxes with a lid on clearance at Staples.  This box worked for a bit, but I was getting frustrated that it was taking so long for me to find the coupons I was looking for.  I was digging my feet in the ground about spending money to help me save money.  However, soon after Christmas I caved, I bought some baseball card pages, tabbed dividers and used a binder I already had.  I was determined to get organized.  I set up my binder with what worked best for me.  Started bringing it most places I went and was amazed at how much easier a coupon binder was than a coupon box.  The only adjust I made to my binder was buying one that the pages were able to turn freely in.  With the ease of the binder, I don't think I will ever go back to a coupon box.
How do you organize your coupons?