You could choose one of the following:
Invite family and friends to a gathering, and ask them to donate to Amnesty the amount they would spend on a nice evening out.
Turn your athletic challenge into a chance to collect donations for Amnesty International's human rights work, or join Team Amnesty at a charity marathon in your city.
Celebrate human rights on December 10th by inviting friends and family to sponsor your letter-writing efforts or any other activity you choose on the day.
Join a yoga marathon in your city, or invite a local yoga studio to host a yogathon in support of human rights.