The Australian Geographic stores are an adventure to visit - they are filled to the brim with nature based toys and games, telescopes and books of natural wonders. There are science experiments for children of any age (to me, that includes adults, for I don't think its ever too late to grow a sea monkey or learn about weather patterns) and these are not dull toys or games to play, but highly educational and I genuinely believe, life enriching.
I like the telescopes and the astronomy books and all things connected to learning about the planets like the rotating space gallery, which is an interactive model of the solar system. The budding scientist can experiment with a microscope or the junior paleontologist can learn about the Jurassic era and dinosaurs and build a triceratops Dino, a Stegosaurs or Tyrannosaurus Rex.
Outdoor toys and games will keep you or your children amused for hours including the electronic plane launcher that you can launch any paper plane from. Plus there is the bee bee boomerang, a range of bug viewers, kites to fly, a compass or outdoor explorer kit for the budding adventurer.
For indoors or the laboratory, there are solar science kits, rubber snakes and spiders, glowing stars and even the traditional worm farm. You might like to grow a diamond or make a volcano. If you have the makings of a spy, you might like a listening device kit.