If you need ideas for laser cutting (especially with Christmas round the corner) then Steve Good has hundreds of free files at Scrollsaw Workshop. They are predominantly for scrollsaw but can be easily converted for laser
I found several sites that provide “free” files. Vecteezy will allow downloading of their free files. These are sent in a zip file but once unzipped you get images in SVG, GIMP, JPEG, and PDF formats. If you don’t become a paid member then you are required to give an attribution and you have a limit on daily downloads. Most of the images would be a good start to a project.
Does it matter that I’m using a MacBook?
The files don’t download.
I’m brand new to all of this. I’m urgently looking for a way to simply test my Atomstack A10 before the return window closes in a few days.