When it comes to craft for public transport, felt generally does it for me. When it comes to Christmas crafts with felt, you really can't go past Jenny B Harris over at Allsorts. Her annual series of Christmas blogs is legendary. She has had me yearning for a white Christmas tree for years now. These trees above use her Festive Felt Trees pattern (and it's free!). If you are planning to make more than one, I'd suggest you cut them all out at once so that the pieces nest together nicely when you are laying them out on the fabric.