Synopsis: The players stumble upon a sentient gelatinous cube in the depths of an abandoned dungeon. The cube, named Gelloo, has been studying ancient tomes in an attempt to learn magic, but is unable to cast spells due to its physical form. The players must help Jell-o find a way to become a wizard.
Setting: An abandoned dungeon filled with traps and ancient ruins.
Act 1: Introduction
Act 2: The Search for a Solution
Act 3: The Ritual
Act 4: Conclusion
Note: This adventure can be adjusted to suit the level of the players and can be expanded upon to include more obstacles and challenges. The idea of sentient creatures seeking to be more than they are can open the door to a lot of roleplaying opportunities and can be a good addition to any campaign.