The Future's Wide Open!

Invite guests to come wearing whatever outfit they would in their future ideal job - and give everyone a nametag so they can fill out with their job title (Susan - 1st Grade Teacher). Adults in jobs they love can just write the truth, or be more creative/fanciful - (Joe - Interstellar Spaceship Captain).

It would at least spark conversation ... and you could use "futuristic" decorations - corny Futurama-type stuff, or whatever!