That's a great question! Dealing with scratches or chips on your powder-coated urban trash can is frustrating, but yes, you absolutely can get a touch-up paint pen for it. It's a common and practical DIY fix.
First, you'll need to identify the specific color and finish of your can. Powder coating is a durable, baked-on finish that's different from regular spray paint. Your best bet is to contact the manufacturer or retailer where you purchased the trash can. Many companies offer exact-match touch-up kits or pens for their products. If that's not an option, take a clear photo and visit a local automotive paint supply store. They can often custom-mix a small touch-up pen to match the color sheen of your powder coat.
Before applying the paint, clean the area thoroughly with rubbing alcohol to remove any dirt or grease. Use the pen's fine tip for small scratches, applying thin layers and letting each dry completely. For a smoother blend, you can gently buff the area with very fine grit sandpaper (like 1500 grit) after the final coat cures fully. This won't be a perfect, factory-fresh repair, but it will seal the metal from rust and make those blemishes much less noticeable from a distance. It's a quick, cost-effective way to extend the life and appearance of your can.