At one point I shared an elevator with ten drunken gnomes with very tall red hats.
Easter Sunday, back from Norewscon. I had a blast. Spent the bulk of my time attending panels on nanotechnology, future of farming, future of food, future of medicine, asteroid mining, 3d printing, backyard space programs, sustainability, and long term data. Panel discussions with very interesting people doing very interesting things.
I came for the science, but there was much whimsy too. Pictionary with a science fiction/fantasy flair, (someone guessed my "Something Wicked This Way Comes" in less than ten seconds. I got "Do Androids Dream of Electric Sheep" about as quickly)
Costumes ranged from the "Yip Yip" muppets, to elaborate and lavish queen victorias, Glowing fairy princesses covered in LED's, comic book characters of every type.