Tip of the Hats 2017 is live this weekend! Join the fun September 22nd through the 24th, from 11am to 11pm PST, or check out the live stream on Twitch. Tip of the Hats is a charity event hosted and supported by members of the TF community. Since 2013, it has raised over $500,000 for Children’s Oncology Services, Inc. (COSI), which offers camps and other programs that allow kids with cancer to just be kids. With your help, COSI can offer these services at little to no cost to their families.