Smoldering Brand is a decent low-level weapon, procs at level 1. [Edit: Or is it 4? Something like that, anyway.]
Tree Weave for all except int casters.
Black sapphire jewelry is more expensive than the HP/AC rings but another good investment for any caster/hybrid class.
Including the int casters is what makes it tricky. You could look through
the equipment list by class and see what pops up.