Hello @thedarkhorse I couldn't comment before because I have been very busy. I have thought about this a lot, because I want to make a contest in the future when I'm not a minnow anymore hehe.
I have many ideas in my head, but I'm not sure if it's against the rules to give more than one, so I will give you one of my favorites ideas.

I named this idea "The living object", and basically it consists on humanizing an inanimate object, and it can be anything, you can choose the object or the participants can choose it. The person who really makes you think the object is alive, will be the winner. I also suggest to choose randomly a genre for the story, you know using one of those big salad bowls and putting inside the crumpled papers with the genres like they do on TV shows, and the contestants have to comment so that you can assign them the genre that was randomly chosen from the salad bowl. Sorry if this sounds very complicated hehe, it's just for more fun but you can also just give them the genres that you think are adequate.

I will show you some examples, let's say my computer mouse is the object:

Horror genre: "In the shadows of a messy desk, the mouse was afraid of being clicked again. Trying to escape of Its terrible doom, but tied up with a long wire... the monster was coming again" (I'm not good at horror stories so this can also be considered drama xD)

Romantic genre: "People may think we mouses don't fall in love. But, after all of this time next to her, My heart started to accelerate increasingly. Typing a lot of love phrases everyday but none of these is for me. If she only knew every one of my clicks mean "I love you".

Comedy genre: Day 1, the postmodern cat of the house still doesn't know that I'm not the mouse to which he should be trying to hunt. Should I tell him or just keep having fun by watching how he looses all of his teeth by trying to eat me?"
Not funny at all, haha, but since I love cats this is the first thing that crossed my mind xD.

Well, those were just examples. I think this could be very funny and entertaining . It can be either a comment or a post (of course way longer than my examples). I'm a bit sleepy and my English is not very good,I hope you understood the idea and I explained everything well.
Let me know if you need more ideas, I have plenty of them in my head.