How about an extra background for DnD 5e?
Whether from your previous life or from your free time, you’ve trained in something completely new.
Prerequisite: Spend 30 downtime days or 1st level
Benefits: Gain the following:
- Gain 1 to an ability score, to a maximum of 20.
- Gain an extra background. You do not gain the equipment of the background, but do gain any other bonuses associated with the background. You may change your personality, ideal, bond, and flaw.