Hands-on Activities DIY terrarium kit is a good interactive toy for kids to express themselves, helping to develop children's hands-on ability, coordination and thinking skills. For kids and beginners it is satisfying, skill-building, and much fun. Easy to Assemble Comes with everything needed to create and glow your cat garden. It's easy to build by 4+ year olds. Decorate your child's room with this night light and create a warm atmosphere. (The battery for the LED light is replaceable, no plug and wire, just simply replace the battery and the light will be always on when you need it.)