This is super easy to do. Sign up for my email list at www.james-compton.com for more cool business ideas like this! Step 1 - Go to Walmart and buy a can of (1) black spray paint, and (2) white spray paint. Step 2- Buy number stencils Step 3 - Go to neighborhoods and knock on the doors of homes who don't have house numbers painted on the curb. Step 4 - Charge them between $10-$20 for this. It only takes 5 minutes. Upsell them glow-in-the-dark paint for an extra $5 or $10. Make an American Flag Stencil border and charge them an extra $20 for it. See you could possibly charge $40-$50 for this :-) Here's a sample sales speech (the one I have used). "Hey, I'm ____, I noticed that you don't have your home number painted on your curb. I'll paint it on there for you for $15. Does that work?" **They'll say yes about 98% of the time**. So instead of making $10 per hour, you're now making $10 every five minutes.