I am using the Agile methodology at work. (Enjoying it, as well, although you should ask other software developers whether they also enjoy it!)
Believing that I should practice what I preach, I am also using the Agile methodology in my personal life. I have adopted a chapter from Mindhacker and combined it with LeanKit.
Different chores have different point values. Carrying your laundry to your room and putting it away earns 1 point. Feeding the dog earns 1 point. Emptying the trash and recycle bin earns 2 points. Unloading the dishwasher earns 3 points. Washing the dishes + loading the dishwasher + wiping the counters earns 4 points.
Agile calls these story points. Agile recommends using a Fibonacci sequence (1, 2, 3, 5, 8, 13...) for different story points. The idea is to do a relative sizing, not to document time. For us, feeding the chickens or taking the trash bins curbside is a little more odious, so those chores garner more points.
LeanKit calls these (a rather bland) size.
Using LeanKit on a web interface or an iOS app, a chore gets moved from the "to do" to "in progress" as the child (or me or my wife) begins the chore. When it is completed, they move it to the "done" column.
The family took to this rather well when I mixed in a Mindhacker incentive: I paid out cash relative to the proportion of story points earned.