What I think we all love most about Easter is children running around looking for Easter eggs. Its a collect them all type game but every egg you collect can be opened to unveil a item of real worth and value(well at least to a 9 year old)
Because of this I think the Easter competition should be about collecting.
Collecting has proven to be both a very popular and successful way to add replay value and length to games.
You often collect to unlock secrets, special moves, bosses, story, and levels. Leveling up in RPGs involve collecting XP
As games like Katamari Damacy have proven there is still much to be done and explored in regards to the concept of collecting.
I think with a few guidelines added in it we could have a excellent competition!