Pick a category from the menu then give it a go.  You can also select a level of difficulty using the stars.
If you have done something, then tell Dr Corbin or any teacher about it and they will give you house points!
You will need some sort of proof, but this might just be a quick photo or an ability to chat about what you did, depending on the challenge.
If you have an idea for a challenge, let me know using the button at the bottom of the list.