Spellbound bags are Jack O' Kazam's special bags scattered all over Toontown during Halloween. There is only one bag per district located at a certain spot from any playground, but a new bag spawns each time one bag is collected. They can also be found in a playground's main buildings, such as Toon Headquarters. When a Toon collects a bag, they receive a "Spooky Surprise" unite that either offers 1,000 jellybeans or a curse, which may be a random cheesy effect or a random species sound effect. A unite can be only used once and must be used before searching for another bag.
- Spellbound bags were inspired by the idea of Cartoonival bags that were created for Cartoonival.
- Using a "Spooky Surprise" unite that grants a different cheesy effect while in possession of a Pumpkin Head does not remove it.
- If a Toon had a cheesy effect before they were affected by a "Spooky Surprise" unite, their original cheesy effect returns as soon as the "Spooky Surprise" cheesy effect fades away. Logging out of Toontown Rewritten removes the Toon's "Spooky Surprise" cheesy effect.
- A common strategy to find a spellbound bag is to gather a group of Toons and "harvest" them in one district.