I don't have any magazines yet but as soon as I began making blocks I noticed a problem with templates. My system so far is to have a notebook with document protectors with pictures of the quilts in alphabetical order by title.
Then in a legal size expandex file with 26 divisions I have the templates and directions in legal size manilla folders in alphabetical order. That way I can find them by title or by their picture.
I haven't quite figured out what I do with all the supplies that I have. The fabric is in see through plastic bags. But the cardboard, tracing paper, colored pencils ect. I've just got a box that it's all jumbled up in.