With approximately 1.8 million meetings and events held annually in the US alone, standing out requires more than another email blast. This post rounds up unconventional promotion strategies that work in 2025: think physical invitations in an era of digital overload, "guess who" speaker contests that build anticipation, and AI avatar campaigns that turn attendees into brand ambassadors. Whether you're planning an intimate workshop or a large-scale conference, these ideas will help you cut through the noise.