Getting It Done Game Jam
Make a game about the last 20% of something. About the climatic situation or the big payoff. About getting the last bit of something finished. Create a game that exists or in someway deals with that period of time right before completion. 

Example ideas:
- A tearful conclusion
- A climatic battle
- The grand finale
- That big emotional payoff
- Sending an email
- Wrapping up a speech