1st Adruino. What to get?

Perhaps if they had a printer from several years ago. I believe modern printers all have switched to micro-USB (and slightly older printers used mini-USB), The Arduino is the only device I have in the house that has the square-ish USB B female connector. Fortunately, I do have plenty of cables back from the era when those were popular cables.

Most things seem to have switched to the micro-B connector (there are European laws that mandate most electronic devices use the micro-B for charging, though Apple as always goes its own way). Adafruit seems to be the exception where their Gemma/Trinket use the mini-B connector that was previously the popular choice, but it has since been deprecated by the USB standards committee.