My friends were all nice enough to drive all the way up to the North Country for my 30th birthday... and dress up for a tea party/picnic.
Steampunks in the woods...
My character was the Dirigible Tour Guide.
The activity was a scavenger hunt for the pieces to make a dirigible, since the tour had ended abruptly in a crash and the usable parts would only make a balloon capable of carrying one person. [Because I was busy/lazy] I didn't take any photos of the pieces I made, but they were just craft foam shaped for 3d models and spray-painted.
And the patches on my uniform: