right now my coupons thrown in the center console in my car, then when I am needing to get something I go through it and find the ones I need. I do not like it that way. I used to have a tin I altered. In there I had them sorted by aisle according to the layout of my commissary. They were then in little snack baggies between dividers. The tin was a large recipe box holder and was too large. I have also used old envies too also according to the aisle layout. I know I like the aisle layout, just need to find the best container that is easy to transfer.
I use a small 3x5 card file with dividers (handmade). I sort them by broad catagories, like dry goods, dairy, frozen, etc.