Ideas;
Go to a meeting
Plan to play guitar
Spend an hour journaling
Go for a long walk in nature
Hit the gym
Find a local community event (non-drinking)
Call a friend you haven't seen in a while and invite them for an impromptu coffee
Do the same with a family member
Read the Big Book
Find a local Zendo and visit it for an introductory meditation session
Try out a local martial arts studio for an introductory lesson
Go for a run
Go biking
Take yourself to a movie
Go to the library and look up a subject that interests you
Make a list of things you can do in the future, cut them into little slips of paper, put them in a jar and mark it "The Anti-Trigger Jar".....
Best defense is a good offense.