Please find links to YouTube clips for inspiration...
The Moth is a storytelling night, why not try telling your own 3min story?
Raw Comedy is a stand up competition for amateur comedians...who knows if you prepare 3mins of material a month....this maybe your next step!
So You Think You Can Dance....well why not for 3mins.
Slam some Poetry for a good 3min
Write a 3min Song
Paint a Picture in under 3mins - from Anderson Viewers Got Talent