How to get Arcane Surge despite Eldritch Battery, looking for more ideas

Title says it all. I've listed the ways I know of, but none are too good for my build, need more ideas.
*updated* added the suggestions made thus far, thx :)

Viable
Master craft veiled mod cast speed + arcane surge on kill (useless vs most bosses though)
Arcane Capacitor notable: chance on kill
Command of the Pit unique
Bitterbind Point unique from Catarina
(Scion) Hierophant Ascendancy
Brinerot Flag unique (actually good now?)
Synthesis implicit on ring. Readily available on Circle of X rings. https://www.pathofexile.com/trade/search/Harvest/RGQwv4u7

Cluster Jewel
Arcane Adept: after 1s of channeling
Arcane Heroism: chance on hitting unique enemy
Arcane Pyrotechnics: on mine/trap explosion
Ancestral Inspiration: grants arcane surge on summoning a totem

Too expensive for me
Some Precursors Emblems
Watcher's Eye mod: Get Arcane Surge for 4s on crit while affected by Zealotry
Crusader Suffix on Wand (or similar): % chance to Gain Arcane Surge when you deal a Critical Strike

Stupid, but listed anyways
The Rippling Thoughts uniques
Activating an Aura linked to Arcane Surge Support

Synthesis implicit on ring.

Readily available on Circle of X rings.


https://www.pathofexile.com/trade/search/Harvest/RGQwv4u7

There's the Bitterbind Point unique from Catarina - gain Arcane Surge on crit.

https://pathofexile.gamepedia.com/Bitterbind_Point

Watcher's eye:
Gain Arcane Surge for 4 seconds when you create Consecrated Ground while affected by Zealotry.
Works well with inquisitors :)

Found another one:
Crusader Suffix on Wand (or similar): % chance to Gain Arcane Surge when you deal a Critical Strike

I'm assuming the character in question is your Occultist in SSF Harvest. You could replace CWDT on your Steelskin with Arcane Surge Support. Since Guard skills are instant, I don't think it's really necessary to trigger them.