I'm experimenting with a combination of loose sheets of paper in a binder, and re-writing. I tend to favor rewriting to summarize coupled with archiving as I find I rarely actually go back and review the notes otherwise, and rewriting them tends to lead to summarizing and compacting and excising unnecessary information, while I can keep the old pages.

(This is especially relevant for things like task lists, plans etc., where things often change substantially over time, though it's important not to overdo it and "lose" context etc.)