Need help with my build

Aside from the boss (King in the mists) in Act 1, is there any other way to increase spirit without it being tied to your weapon? I’m a Sorc and the sceptre is not a weapon I can use with my build. Are there other bosses or ways to get it?

Thanks for any assistance

Later in acts you will get another spirit increase (at least +30 for mid act 3 for sure)