I think it's about as easy as creating AUR packages most of the time, especially after the first one or two. You can create them in a more ad-hoc way than you probably expect. For example, this video shows an example of creating a totally-legitimately-real package: https://www.youtube.com/watch?v=1nU_hR2kod4 -- some of the follow-ups in the channel also show a little more work with that simple derivation ("package" in de-nixified terms)