As well as changing what items can be spawned, a second controller can be used to spawn items in front of Mario using the d-pad, allowing for a simple 2-player mode.
For the code please go to my site at:
http://sites.google.com/site/jamesskingdom/Home/game-codes-by-james-s/super-mario-64-codes
Thanks for viewing and please have a look at my other videos.