I like to print things like Train times and such when heading out, just in case I need to alter plans and tech fails so I can't look up the next option online. When flying on holiday I have a little was of paper with connection details, luggage rules, etc. Printing is increasingly unusable direct from sites/apps so I've taken to either writing my own notes (which has the bonus of saving paper) or taking screenshots (which also saves paper as cropping allows less irrelevant detail & site chrome to be included).

I'm almost nobody in a large number of other respects too though!