Using this product is a breeze! First, find the included canister. You can fill it with either warm or icy cold water. Then, simply drop the Batman and Two - Face figures inside. In no time, you'll see them change color. This is a great way to have fun and enjoy pretend play. When it comes to collecting, you can look for other Imaginext DC Super Friends Color Changers sets, but remember they are sold separately and availability might vary. As for maintenance, after each play session, dry the figures and the canister thoroughly. Keep them in a dry place to avoid any damage. And always make sure to supervise kids aged 3 and up during play to ensure safety.