With their approval, a bank account is needed to cash he check they send you, actually most of the hubpages revenue comes through Google Adsense which might nee to verify a bank account as well.
Things changed at Associated Content, not sure the write payoff is as good now.
Squidoo is a similar site...
You get 60% of the Hubpages revenue, if you look at the long game, you might start your own blog where you would earn 100% of the revenue, it can take a long time to develop a readership but by the time your 18 it could earn some decent revenue.
Googler's Blogger.com has no paid upgrades, but again probably need a parent to sign up for Google and Adsense.