Since about 2009, I've gotten very organized. I use the typical plastic pages for everything from 35mm all the way to 8x10 negatives, usually Clear-File. They go in binders sorted by film type (35mm, 120, etc) and by year. I don't usually write what camera/lens was used (most of the time I will know just by seeing the image) but I do keep notes on the development of the film in that page.

Before 2009 was another story. Between 2003 and 2008 I was largely d*****l and so nothing I shot on film during that time is organized. I still have uncut rolls just rolled up, waiting to be put in a page.... All my work from 1992 to 2003, slides and negatives, is in a pair of portable file boxes, in plastic pages or archival envelopes. I rarely open these boxes as it is a real nightmare to locate one image out of the thousands there...