Honestly, I’d start by treating the bins as part of the playground landscape rather than as a utility afterthought. A good option is a timber or recycled-plastic enclosure with a rounded top and a simple hooded opening; it reads as street furniture and hides the bag and mess. You can also powder-coat the bin in muted green, warm wood tones, or a playground-matched accent color, then add a community mural or leaf-and-animal motif. I’d skip cartoon faces or big round openings that can accidentally look odd near play equipment.
Another practical idea is a bench-bin combo: a normal-looking bench with a concealed pull-out bin underneath. It gives parents somewhere to sit, keeps the bin out of the main play zone, and reduces visual clutter. A planter-bin works in a similar way—a sturdy planter with a hidden liner, so it looks like landscaping until you actually need it.
Make it child-friendly and easy to maintain too: rounded edges, no finger traps, lockable doors, removable liners, rain hoods, pest-resistant fittings, and smooth anti-graffiti surfaces. Put simple sorting icons at kid height, and place bins at the edge of the playground—not in the middle of running lanes—with clear sightlines for caregivers.
Materials matter as well. Powder-coated aluminum, stainless steel, HDPE, and recycled plastic wood hold up well and stay tidy. If you want a playful touch, use colorful lids or nature-themed cutouts instead of making the whole bin a novelty character. That way the bins feel considered, safe, and clean—not like an eyesore.