One thing interesting maybe would be contests where questions/answers about a specific theme would be the ones being analyzed. For example: Questions about how old stuff worked on Tibia, historical wars or even famous players and guilds who managed to accomplish something amazing at some point on Tibia, we could have the "historical month" for it.
I got a wild idea here right now where we (the staff) would ask specific questions about Tibia mysteries and the most interesting and creative answer about the subject would win. But we would need to think a lot about how to do it properly. We would need some really intriguing questions :P but the most importantly: what do you think about it, folks?