Furthering audience implication and attention during keynotes and presentations has always been a key point of Wikimedia events and as a tech community we must strive to find new ways to facilitate this as we move forward as a movement.
Bingo grids have proven to be a tremendously powerful engagement tool on that matter, preventing audience sleep and involving them in a playful and yet subtle way.
Yet, generating such bingo grids have proven to be challenging (cf. previous work includes the grid of Wikimania 2013). A tool to help generate such grids would be invaluable.