Make a font
Model car that moves in mysterious ways
Interactive visualiser for data flow (think Github Globe)
Battle bots; battle it out during a show and tell
Make a "what's on" app for your town or city, like Timeout London
The environment moves the players (or the players move the environment)
Make a local guide of your town or city's best _____s
Make an actual helicopter hat
Pinball, but with unconventional materials
Gamify exercise
Make a game based on a movie scene
Wizard’s Chess
What if a lazy susan moved instead of spun?
Make the most incredible button
Doodle Jump, Angry Birds or Flappy Bird with a twist
Chain reaction machine
Gyroscopic mouse pointer
Make a specialised marketplace for collectibles you are interested in
P2P web application for sharing things
Make a dot-to-dot image generator for kids
Make the world easier to navigate for people with physical limitations
Make a habit/goal tracker
A chair that alerts you if you've sat down for too long
An app that helps you save money on your groceries
Make an opponent to practice against
Make Owen a hat to keep his head warm in winter
Training game to make the perfect coffee
Tool to raise awareness and engagement of social movements
Augmented cutlery
The best routes for skating, managed by the community
Make a toy vehicle
Musical gloves
Translate movement into music or art
Interactive map and story of historic migrations