Sorting my notes

As a result of all the cleaning and organizing I've been doing, I finally located all my writing notebooks. In theory I only have one notebook at any given time and I carry it with me. The truth is that sometimes I'm hit with an idea I need to write down and my notebook is not where I expect it to be. Then I grab a new notebook or an older notebook that still has blank pages. Right now I have one completely-full notebook which I need to refer to, and two mostly-full notebooks. And for...