World Wide Flash Mob Day is June 9th and why not drive out to Taylor TX for an event.
This event is in Murphy Park, near the City Lake that has ducks on most days. Bring some duck feed for the ducks. (Bread is not good for ducks). There are stores on Hwy 95 (the main drag) that might have what you're looking for.
We will meet at 10:45am and quack with the ducks. If you have a Duck Boat quacker, bring it along. We might quack together.
The event will be over at 11:15am.
With the later starting time, even people from South Austin might be able to make it up here for the event.
Afterwards people might break off into groups to go caching in the area. You never know what might happen in Taylor.