Jobs for under 16's ? any ideas? please help !?

I'm 13 and I work at my dads restaurant but I only make tips and I have to pay my phone bill so yeah all summer im work and I usally make 20 dollars a day I know it isn't much but its something so I suggest find a local restaurant like a Mexican one there really friendly and ask to clean or I have seen people in my city that hold up signs for like metro PCs or Like little cesars