I’ll give your packing tape technique a try. I really hope my ender 3 survives this.

How sensitive is pp to air drafts in your experience? Do I need an enclosure, some articles said I’ll need one, others said it’s optional?

Zebra works with cups, the ppd files are included with cups

It shouldn’t even be able to run it, because the x permission bit is missing. As far as I know binaries can’t include icons on linux, so it would look different too.