consider 'Light'
its set and forget
your character already has Darkvision (12m) so the only real use for it is to cast on things like the Phase Spider Matriarch to make her unhiden
I think if you cast light on an enemy they get a DEX saving throw against your spell DC? If so, low INT might mean a barbarian would struggle to apply it. Though if noone else in the party has the cantrip it might still be useful to cast on a party member without darkvision.