The Garage Door Opener is an item found in Fatty Bear's Birthday Surprise.
Fatty Bear's Birthday Surprise Edit
Fatty Bear can find the garage door opener after he goes down the laundry chute in the bathroom for the first time. After he lands in the laundry pile, the garage door opener will bounce out of the laundry and Fatty Bear will automatically obtain it. Fatty Bear can use the garage door opener to open the garage, which contains the sugar (and sometimes a letter for the Happy Birthday! sign).