I've made it to my hotel room. I will post the rest of the scenarios I've came up with.

Scenarios:

Idol AU- they're a part of your staff

Getting your monster/supernatural partner Halloween themed candy based on them

Protecting your friends from their sasaeng gf

Reunion with them after they were away for a long time

Meeting them at a karaoke bar 

Your bias as a tattoo artist 

Taking care of an abandoned cat/dog that your bias eventually adopts 

Bias as a cop, firefighter, or paramedic 

Bounty hunter 

These are the rest of them. Use any of them if you'd like to.