The server needs another admin, who can spawn.
That person would then host events, and give out a prize to the winner.
Events off the top of my head: PvP Tournament, Boss Fights(Loot for EVERYONE), mazes(easy), races to cities by running(aggressive races and clean races), and more.
Prizes would have to be set up by how hard the event is, and what Power is willing to let the Admin give out to the players for completing the event.
This would bring more attention to the FORUMS so people would check the times for events, and more attention to the SERVER for some unique events.
I am sure with me(and others) coming up with the events they want, that admin could do it, and wouldn't have to worry about being on a lot, since the events would be scheduled on the forums so people know when to get on!