Prototype an interesting, unusual, experimental or downright weird micro-service that uses a voice- or chat-based approach.

Build a simple but useful personal me-bot that you can talk through through SMS

Prototype a web-delivered product or service that does some good and uses a zero-ui or chat-based approach.

Build an 'internet appliance' to remotely monitor and support a plant's growth. Develop a working prototype (a form is not required) to demonstrate your concept using the Particle platform.