I had a problem with my (digital) paper-based note taking (on a Remarkable 2): I manually write down information, but sometimes I need a reference to a web page, e.g. a Confluence wiki, a Jira tracking issue or similar. I cannot easily add a link to paper.
So I built a very simple link shortener site, which is private to a logged in user: Textpage.net. I simply add the needed link to this site, which generates a unique number. I write down that number on paper/Remarkable, and that’s it.
So this is your very own link shortener service. So far this is quite rudimentary, but I am continously improving this site. Yes, it’s free, does not require any App install or similar, runs without advertisements and in general is just a simple service from me.
Obviously this works on pure paper journals as well.