Not too long ago I came across a Thames & Kosmos chemistry set. I looked further into the company and discovered that they make a plethora of other science experiment sets. The experiments cover areas like electronics, astronomy, biology, chemistry, physics, alternative energy, and many others. The kits range from under $20 to well over $100. They are designed for children over 5 or older. The fundamental series is a great place for a young scientist to start, particularly the Core Science kit.