Eight-year-old twins, eco-enthusiasts, and hosts of the web video series Tristin & Tyler’s Tales from the City, Tristin and Tyler are back with another challenge for KIWI Kids: Share your artwork this holiday season and give a gift at the same time!

Can you do this? With the help of your parents, invite friends over and host a T-shirt decorating party. You can supply organic cotton T-shirts to all the kids, or have everyone bring their own. Check out how Tristin and Tyler decorate their shirts in the video below!