The format basically goes like this:

Stage Name
Objective+Cosmic Object

For example:

Fortissimo Studios
Roll up noisy things to make Lyra!

Enormopolis
Roll up giants (as in oversized compared to a normal object of the type) to make a space robot!


If you don't want to contribute a stage, you can always create a new section of the main hub-just be sure to mention any special features.

Digital Craft
Roll up Electronic items to make Space ship

Plumbatia
Roll up Mario characters and achieve ultimate copyright violation to make Europa.

Pig of Oppression, Song of Depression
Pick up pigs to make ham in the sky!

We Love Me & My Beautiful Katamari Damacy Arcade
Roll up all the Katamaris in the Cosmos to create a Katamari comet!

All the cousins, the King, Queen, Grandpa, and a human ("You") are rolling Katamaris of varying sizes all over the world- the Prince/your selected cousin has to roll his/her/its Katamari big enough to roll everyone else's up into it. The King's rolling the Sun!

The King of All Cosmos's description for "You" in the Item Collection screen; the circle is blank, or it uses the 360's Live Vision to show you yourself:
"Our biggest fan! Spends a lot of time sitting in front of a television, doing weird thumb motions. We think it's a cool way to roll."