I found this gem 2 days ago in a camera store here on Maui. It only works with the Rebels and 5Dii (NOT on the 40D or 50D), but it is very small and allows you to trigger your camera remotely (you have to be in front of it though). You can even use the 2 second timer. If you have one of these camera’s and are doing a 365, it will make your life a ton easier than using the timer. It runs just $25. Canon RC-1 Infared Wireless Remote For 5D Mark II and Rebel XSi