Well, this thread is for you. Here you can post any weird thing that you can do and no one else does. It doesn't matter what it is, just tell us about it here.
I create soccer team names and elaborate leagues from 1st division to 6th division. Then, I create countries and elaborate leagues in every single invented country. If I have enough free time, I create some sort of Champions League with the top 3 soccer teams of every 1st division league. I've done that Champions League thing only two times thus far.
When I have free time, I just come up with 20 or 24 team names and simmulate a league on a piece of paper. I know the formula so every 'team' plays with all the rest as a regular soccer league.