Says the guy without kids, no offence Farkas but kids can do plenty. I was helping out my dad when I was 3, obviously I wasn't doing much more then handing him tools and parts but I got to be involved.
My daughter doesn't show much interest in helping me work on my stuff, but if she did I wouldn't mind. When my wife has time she trys to help out and then my daughter wants to be part of the party, neither of them do much but its nice to have them interested. I love it, and she won't hesitate to ride on my ATV or hold the laptop while I'm datalogging.
I'd let your daughter help out.