This is so much more than a toy in the hands of a bright and eager child. My six-year-old grandson found this his favorite Christmas present. He built many different devices, each with a particular principle to teach. He then quickly expanded his efforts using alligator clips to attach the devices in this kit to other toys and electronics. It seems to be well made, though time will tell how truly durable it is. While this is fun in just a gee-whiz mode, it is especially valuable for a child who is seriously interested in science and desires to learn the fundamentals of electronics.