Diana Benner at TCEA Tech Notes shares a fun way to create writing prompts:

Dave Birss created a digital story dice generator. The dice feature different images, with over 50 options for each dice. You have the option of choosing five dice or nine dice. This is a handy tool if you are looking for inspiration to create fun story ideas.

A fun and easy way to spark creativity, the digital story dice generator is also a great example of a simple web app that students can develop in a computer science class.