I almost always see bards recommended to use the band of the mystic scoundrel. I was brainstorming last night on some multi classes that share the same spell casting stat, and so I was looking at ranger and druid, and noticed that Arctic circle land druids get Hold person, haste, sleet storm and spike growth.
Not looking at this from a min-max perspective, but one of those, sometimes you run a party without a bard, I don't recall much discussion of this combo.
I think 5 ranger/7 druid would make the most sense for dual attacks with most spell slots. Not sure on best ranger subclass that would match up best. Gloomstalker probably makes the most sense. Anything that I am missing?