You send me an idea for a leveled treasure (weapon, suit of armor, spellcasting implement, ring, etcetera), and I make it kobold-themed if it wasn't already, develop it, and include it in the final PDF. Then you get to show it off to your friends and say "this was my idea". And if it's a weapon, stab people with it. In the game, of course.

You also get the PDF and your name in the credits in the Two Kobolds in a Hoodie backer section.