I'm sorry if I sound totally negative here, but 10 year olds just can't get real jobs (at least nobody under the age of 16 can). Or even part time jobs. If you don't like any of the suggestions above, then maybe you shouldn't get a job since you don't sound too desperate for one. However, maybe you could sell some stuff you may not need anymore. In the meantime, you'll just have to be patient and wait a few years until you can finally get a small job.
Paper route, if your that lucky
Babysitting if you love kids. Sometimes its good pay
Dog walking, car washing for your neighbourhood. DO chores round the house etc
Baby sitting if your mature enough to your parents
I'm pretty sure you have to be 16 to get a job. Paper rounds might be from 13+ and I think some places hire waiters/waitresses at 15, but no-one will hire a 10 year old. You should be enjoying your childhood before school starts to get difficult.