Unfortunately, the only citizens of Monstropolis who visit WDW are James P. Sullivan and his Scare Floor assistant, Mike Wazowski. Sully would probably like it if you asked him to say hi to Boo for you.
Unfortunately I too was looking for BOO last year or any gift with Boo on it.....NOTHING. They only had 1 beanie babytype animal of Mike and 1 of Sulley. I was really surprised.