This Christmas rejesus has a mission for you. How much kindness can you generate with a budget of less than £10? If you think really creatively, how far could your act of kindness spread? Follow the instructions below and tell us about what happened on the rejesus blog. Or read about how other site visitors have risen to the challenge.

Think of an idea. If you're stuck and can't think of anything, click in the middle of the image above to generate a random idea. See what kind of impact you can make, how far you can spread the kindness and set off a chain reaction. Don't spend more than £10.

Leave a comment about it. Tell us about your idea and how you carried it out – and if there were any further effects of what you did. Your story could encourage someone else. Click this link to go to our blog and leave a comment in the comments section, or read the comments others have written.

Vote on your favourite. When December is done and dusted, we'll meet back here and vote on which idea was our favourite, which was the most creative and which generated the most kindness. The winning idea will get a star prize and a big thank you for making the effort.