Fantasy Downtime

What a character does in their downtime or might do when they next get some

Find an inn and convince others to buy it with you
Learn to play an impractical musical instrument
Insist on group training sessions to prepare for dangerous situations
Create or hire someone to create minor items no-one wants to use
Research magic items that other members of the party might want
Learn to play a loud musical instrument
Create a "group fund" for healing, magic items and restoring the fallen
Raise an army to use against foes and rivals
Start up your own criminal gang
Create contingency plans for the group in combat situations