/000_previous_system - I use it on everything
My systems tend to become complicated with time. Computer folders don't have a limit to what you can put inside, so they can grow without control. Especially when you are trying all kind of different stuff in all kind of areas all the time. A simple solution I've found is creating a folder named /000_previous_system in each of my areas (the initial 000 is to make sure the folder stays on top in the list). What I do is: when I have an idea on how to simplify one of my systems, I put everything I don't remember what was for inside that folder. My systems become that way very simple, no more than 3-8 items per folder, one of them this 000 folder. That way, I can always "fish" later something I remember I worked upon, when the moment comes. It feels like shopping, it gives you a great feeling of wealth entering that folder where so much good work has already been done and you just have to dust it off and put it to work again. I guess this system is simila...