Here's some video suggestions.

-A fishing competition where some characters are competing then they fish up something unexpected, like a door to an underwater realm, or a giant squid that talks to them/tris to eat them.
-You're eating a meal with an admin or someone and then an unexpected visitor shows up and after you let them in, they come in and join you at the meal, then you notice something strange, the visitor's face is crooked or something. You reach over, pull off their mask and find out that they're actually ________.

-Have a Pokemon battle using admins dressed up to look like Pokemon, or a tournament battle where you switch to different opponents and the Pokemon are admins or something else.

-You're searching the land for the greatest noob and different people compete to be the greatest noob.

-A miners tunnel shows up one day near your house, you go down and investigate and find something like an abandoned mineshaft with maybe herobrine abiding in it and he chases you but he really just needed to talk to you about if you wanted to trade items with him or something. A different way is you go down the miners tunnel and find a magical ornate door that's cracked open. Through the door is a wondrous city or cavern with dwarves mining, or an abandoned place that was made by dwarves.

I can probably come up with more interesting ideas if you need more insperation in the future.

The other ones are good but i think ur pokemon idea is great because I could give the admins their own moves! Please keep up the suggestions andrew : D