As much as I enjoyed getting my sons out to teach them some mechanics, bleeding brakes with them was painful as they let the reservoir empty time after time. lol. Speedbleeders make bleeding brakes painless and a one-man job. Once you have them, you will always have them on every bike that you plan to keep and bleed brakes.
There are many companies that sell them, I bought mine right from Speedbleeder: http://www.speedbleeder.com/