Here's a guy who needs wayyyy more attention than he has currently! I first learned about Party Planner 64 from Mario Party Legacy, and much like them I'm drinking the Kool-Aid! Party Planner 64 is a custom board creator mod where you can make your own board for use in the original Mario Party.
Players can draw their own custom boards, create custom events with Boo and Toad, and change descriptions and what not. Check out some videos below, there's some amazing stuff you can do!
No release date yet but I'm eager to see this one make it to print before Nintendo drops the ban hammer!