What project could I run?

For my university course (based around community work) I have to run a community project that I set up myself and whilst I have a few ideas I am running low and struggling to decide on a final idea. So any ideas would be welcomed:

1) I want the project to involve working with young people aged 11-15

2) I want the project to be something fun, not a hardcore subject, or teaching

3) I will only have a limited amount of money, well I could apply for more but the smaller the amount needed the better really

4) If it's something that could be a long term project that is fine, whilst it is a short term project I have to do for university, I can continue the project once I'm finished if I want to.

Thanks for any ideas that anyone has!