You can create a contest using the "Forum" item type.

Make sure that if you make a contest, you think through the rules very
carefully, and when you judge the contest, you follow every one of your own rules. Look through some other contests on the site for some ideas on how to run them before jumping in. This one takes, by far, the MOST work and patience, but it is well worth it!

You can create a "Campfire Creative"

Oh my goodness, these are so much fun! Everyone gets to take a turn,
and you never know where the story will go. Once everyone has had a turn, you go around again. You can create rules, and the person in charge has the final say, but writing a story with friends is so much more fun than writing a story all by yourself!

Create a "Crossword Puzzle"

Really, if you hadn't found them yet, the site has crossword puzzles!
And you can create them, or solve them! Some days, just doing a little puzzle is the best way to relax. You can create one with your favorite theme, or about your favorite novel or book series, or just to have fun!

Create a "Madlib"

These were some of my favorites as a kid, so having them on the site made me so excited. There are some great ones out there! Or, if you have a great sense of humor, don't be afraid to make your own!

Create a "Word Search"

Like the others, you can use your favorite theme and create a puzzle for your friends. Just have fun!

Create an "Interactive Story"

These are great! Every person actually adds a new chapter, and new ways to branch in different directions - so each new person who goes through the story can make choices. And if they come upon an empty chapter, they get the opportunity to write the new chapter based on the choice they wanted to see. So, anyone on the site can contribute to your fun story!