C.B.
Hi,
In our house, my kids get their allowance by cleaning in areas that we all use. I've tried to pick once-a-week chores, that, if they don't do them, I can let go for a few days without major negative consequence. My 7-year-old son swiffers the stairs and upstairs hallway to earn $1 a week. I'll mention it to him once as a reminder, but I don't nag. If he doesn't do it, no allowance. My 5-year-old son dusts the living room and dining room and (supposedly) uses the Swiffer flick on the area rug in the living room for $1 (the real vaccuum cleaner freaks him out a little.) He's usually pretty quick to do things like this, so no nagging is required.
My seven-year-old is a little capitalist, and always trying to come up with ways to make extra money, so if he asks for extra chores, I usually have him help unload or load the dishwasher. My 5-year-old doesn't really seem to care about money yet. For both kids, if they are extra helpful without a motive, I will occasionally give them an extra $1.
We do have other expectations for their behavior and participation in family responsibilities not tied to money, and I appreciate the philosophy behind allowance not tied to chores, but this seems to work best for us.
Good luck!