Any store that sells hunting gear -- and some that just sell licenses -- is likely to have some targets. They may not be standard archery targets, but unless you're reporting your score to someone that isn't all that important. Of course you don't necessarily need to buy official targets. We've shot at everything from posters to foam cutouts to cheap stuffed animals, in addition to the more official targets. Balloons are a favorite target for kid's shoots. Just make sure that that whatever you use offers good aiming points (your accuracy really is better if you're at least trying to put the arrow at a specific place), and not be hard enough to damage arrows or cause them to bounce off. I'm presuming you already have a safe place to shoot. That's far more important than exactly what target you're shooting at.