I get by just fine with one of those cardboard accordion ones they sell at dollar stores. I clip the coupons I know I'm likely to use as I see them come out, but I save the rest of the inserts in a drawer in case something comes up later. (ie-I don't need more Head N shoulders right now, but I find a BOGO sale and I have coupons and when it all adds up I get ECBs or something, making it worth it to stock up.)
I keep the holder in my car so I can grab it when I go into a store, and if I can't remember what I have I'll quickly flip through before I go in to refresh my memory.
The one tweak I have made to my holder is that the cheapie ones I buy usually have one divider marked "new products" I take that one out and put it in the front and use it for "Today's Coupons" -- that's where I put the coupons for the products I put in my basket, so I'm not digging for them at the end.
I like the $1 cardboard ones, they work fine for me, and when I inevitably misplace them (with my kids' help, usually), I am bummed to lose the coupons, but at least another holder is cheap and easy to get. I've had about 3 in the past 15 years... I've never had one "break", they just get lost, then years later I find them and start using them again...
I've never watched the couponing shows, so I don't understand the appeal of the notebooks-- I'm sure there's a good reason for them, I'm just uneducated as to what that might be, and happy to remain so.
