[Agollas]

Something which I think would be a nice plugin is an event calendar which syncs across users.

The approach that i thought of would be to have a group of people who could update the calendar and send its data to a user chat channel, then other people who may not have been online when the calendar was updated could then receive the update from other uses who had received the original update.

It's something that i might look in to making in the future, however I might be pretty busy for a while, so if someone else is looking for a plugin to develop, this might be an interesting one to look at.