In case it was unclear what I was describing, here's what is in the LibreOffice print dialog (Mac version):

- Screenshot 2022-10-07 at 14.47.19.png (25.46 KiB) Viewed 1121 times
And when I make a document with six copies of Dear Leader's avatar, the print preview shows this:

- Screenshot 2022-10-07 at 14.49.49.png (48.18 KiB) Viewed 1121 times
Again, maybe not the most elegant solution, but it's pretty quick, with existing software. The downside here is I have to make six copies of the logo in the original document, on six pages, and then tell it to print six on one. It doesn't seem to be able to easily duplicate a single page for n-up printing. This is probably fine for a one-off need, but I wouldn't do it this way if I had to do this often.