That's an excellent and very important consideration! Safety is absolutely paramount when selecting equipment for a playground. For an outdoor trash can in that environment, you'll want to focus on three key things: safety, durability, and ease of use.
First and foremost, look for cans specifically designed with rounded, smooth edges and no protruding parts. Many are made from heavy-duty, rotationally molded polyethylene—this material is incredibly tough, weather-resistant, and doesn't rust, crack, or develop sharp edges over time. A domed or lidded top is great for preventing litter scatter and discouraging pests, but ensure the lid mechanism is safe and easy for little hands or a caretaker's foot pedal to operate.
For safety, a weighted base or an option to anchor it to the ground is crucial to prevent tipping. Bright, fun colors can also encourage kids to use it. Brands like Rubbermaid Commercial and Toter offer fantastic, robust options built for public spaces. I'd recommend searching for "commercial-grade playground trash cans" or "child-safe outdoor waste receptacles." Always double-check the product specifications for "no sharp edges" and "impact-resistant" features. Your local playground and the planet will thank you for choosing a safe, long-lasting solution!