I'll provide a couple:

Name Shortcut Set- /sc <name of player> <name desired> ex: /sc STLRamsFan rams

Speed- /spd <name> <#1-999> ex: /spd rams 9

Name List- /names <name of player> ex: /names rams

Teleport- /t <name> <name of set teleport> ex: /t rams moon (Those who played the first yoyorast with me will know what the moon is like haha...)

Set teleport (use this before using teleport)- /st <name> <create a name that you desire> ex: I find a nice camping place so I want to save it, /st rams moon

There are more but I'll leave it up for others to post them up....