Create a custom module.
Place it on the pagebottom and set visibility (only wiki pages for exemple)
Add in it display media for print query.
If you use Tiki25 or 26 : https://getbootstrap.com/docs/5.3/utilities/display/#display-in-print
(we have an admin media selector for modules but I think it is still experimental 🤷🏻♂️)