"Marigold" Playground concept integrates sustainable design with child safety. Inspired by the mosquito-repelling properties of marigold plants, this playground features built-in mosquito control using kinetic energy. Specially designed stairs and slides convert children's movements into power, fueling mosquito-repellent lamps spaced every 1–2 meters to create a comfortable, insect-free zone. Energy generated also powers evening lighting, extending playtime. This innovative design merges health-consciousness and renewable energy, fostering an engaging, safe, and eco-friendly play environment.