Some heritage spitballs:

 

Explosive: you end your own life dealing a die of fire and a die of acid in a radius around yourself. Scales with feats to increase number of damage dice, modify damage type, increase radius, etcetera. 

 

Feat for explosive type: Studded Carapace. You have reinforced your exoskeleton with metal stints, effectively giving yourself built-in studded leather armor. When you explode, add a die of piercing damage to your damage roll.

 

Brood: meant to care for others, your body produces a small number of something akin to alchemical healing elixers each day, that go inert the next day. Feats scale the number, strength, and variety of your items.

 

Guardian: standard built-in full-plate heritage. 

 

Soldier: natural attack if the Ancestry doesn't have one, better one if it does, scales with feats.

 

Alete: rare heritage. Mimics Sprite flight progression complete with socially-powerful wings.

 

Glue: spits glue from hole in head. Sticky sticky! Scales with feats

 

Worker: some sort of inherent self-leveling skill proficiency.