We fell in with a new group of friends over the last few years, the type of friends that have house parties for events. We've introduced them to the wonders of Eurovision, and it's now one of the events that warrants a house party.
I think this year we're telling one of the families that it's fancy dress, and they have to come as their pick from last year, but nobody else is dressing up and everybody else is in on the joke. It's gonna be a hoot. Can't wait.
Worst case scenario you can make an emergency toga by tying together some of the collection of giant flags you have from countries you supported in previous years.