I always do really good at the Giant Dragonfly, but my favorites are Hide and Seek and the Scavenger Hunt.
I am not a fan of the labrynth. so stressful
I like hide and seek because I get to see villagers I don't usually get to see, and the market price bug catching and fishing games, and the ore game has been growing on me lately too.
the elite scavenger hunt is the best--its fast, its easy, its high medals awarded. i also like tuna catching and shark catching. and the hammer tour is fun with a group, wailing away on dat lawnmower when it flips over is like being cavemen jumping on dat wounded wooly mammoth...
Ore hunting! I also like the shark fishing one for easy medals and soothing music. And the market ones are fun too, it's nice to see how much these things are actually worth!