Holiday Hackdays, a ten-day open-source software celebration inspired by the 12 Pubs of Christmas, has kicked off on December 3rd at 7am PT. Participants are encouraged to use Supabase's row-level security for their Realtime API projects, which can range from building a Santa Tracker to creating secure family chat apps. The event will conclude on Sunday, December 12th, with winners announced throughout the following week. Prizes will be awarded in categories such as most impressive usage of the Realtime API features and most fun/holiday-themed project.