Blank A4 sheets from the printer folded twice and ripped apart.

Too cheap for notebooks and I'm a lefty.

Notes I want to keep/search are in keep.google.com

I use clocker to track my time so I don't worry too much about noting what I do each day because it's mostly in there.

Paper is mostly for just remembering things, todo, doodling, or drawing up system flow when I need it.

The paper is mostly ephemeral I find the things I want to look back at historically are what I did when which is in clocker, old scribbles are just that. If it's important it went in keep or email.

Edit, now that I think about it, has anyone looked at digital paper solutions? I use a mix of hand written and typed and find hand written doesnt lead to distractions like context switching on my laptop often can.