This and other irresistible ideas for play-based learning with discovery bottles can be found at Pre-school Play. Just cut up some pipe cleaners then insert them into a plastic bottle, find an age appropriate magnet for an experiment in magnetic attraction.
You will find magnets have a magical stickiness appeal to preschoolers. They are naturally curious about how magnets work and why they will stick to some things and not to others. This will offer the opportunity for early learning.
Buckyballs are not for little ones, but very popular with adults. So popular, people simply can’t stop talking about Buckyballs. Each set contains 216 powerful rare earth magnets that can be shaped, molded, torn apart and snapped together in UNLIMITED WAYS. Make sculptures, puzzles, patterns, shapes, stick stuff to the fridge, invent a new game trying to find something more useful is useless.