Yeah the best possile thing to do is shovel snow and cut grass. Use your parents lawnmower and their gas, and your good. I work with a company doing that so I get paid per hour. If you do it by yourself and work hard people will give you a decent amount unless they are really cheap.
all the fags at my school scooter so i buy scooter wheels and bearings at this store that cost like 5 bucks and bearings that are like 15 for 8. some dumb kids i sell the wheels to for 30 bucks and the bearings for 20-40 hahaha.
helllllaaaaaa chores for my mom, cuz she works full time and is single and we make good money so she pays good. like 25 a week depending on what i do
put up babysitting/lawn mowing/snow shoveling whatever you can think of flyers on mail boxes.
beg your parents for cheap bike stuff ex; stems, tires, spokes,tubes so that u have more $ to spend on expensive stuffs hope that helps