Best way to get more Projectiles/Chains without Support Gems?

I am looking to end up with Frenzy having +2 projectiles and +2 chains with only needing to use EITHER multiple projectiles support OR chain support, but not both support gems.
Is it easier to gain +2 chains or +2 projectiles via uniques/enchants?
What are some of the easiest ways to get this?

I tried looking up uniques, but it seems like most of them are very niche use items.

I know that the frenzy skill has an alternate quality gem that gives +1 projectile, but it looks like getting another +1 is not going to be easy.

Would it be easier to just look for +2 chains from gear instead?

Proj should be easier to get than chains. Dying Sun is the easiest thing that comes to mind.

Yeah i am already aware of Dying Sun but i don't really want to use a short duration flask. If i have to, i guess i will settle for using multi projectile gem and trying to get my hands on a +1 chain quiver later.

i know you're using frenzy SKILL, but what WEAPON are you using?

bows have tons of sources of +1 arrow, and wands have a mastery for +1 projectile with wand attacks.

deadeye ascendancy has +1 chain and +2 projectiles.

I'm wondering why you would be wanting to add additional projectiles/chains for Frenzy, of all things. It's just a bad skill in most regards. Other than quickly firing off as many attacks as it takes to max out Frenzy charges, there are better options for doing pretty much anything else.

I'm genuinely curious what you're trying to do with it.