On the GamesDoneQuick channel they are raising money for the Prevent Cancer Foundation, and at 7:45pm pst today there will be a Destiny 2 speed run of last wish. So drop in and watch and if you feel like it donate some money for a chance to win some cool prizes, including a Destiny 2 Lootcrate provided by Bungie.
Edit: it is now at 7:27 pm.