how can i pay off this debt?

This may seem like a low amount but i have $400.00 debt that needs to get paid off, not that i spen a lot its just i have my own wacky system of recovering money i've spent ($1 spent $5 make back, $10 spent $30 make back).

I'm $400 in the hole and not quite old enough to get a job and my parents don't really do the whole "do your chores get $50" type thing so please just give me some ideas, i want to get the debt down to at least $120

Thanks