How to Transfer Items Between Scarlet and Violet (2 Switches)?

I have Scarlet and Violet (physical, not digital). I'm wondering how I can get some items from my Scarlet save on to my Violet save, since HOME doesn't allow for item transfering.

I have multiple Nintendo Switches, but I'm confused as to how I can get items by only using one copy of each game. Especially considering I don't want to transfer any save on my main profile between switches as I've heard I can get banned?

I'm trying to figure out how to by using multiple accounts on each switch, but if it's even possible, it seems so insanely convoluted. If it's possible, what is the method?

I also have one copy of Legends Arceus (physical) but I'm not sure how item transfering works for that, or if that even helps at all, either.

Thanks in advance!