Learn How to Spray Colored Fire with This Fun Chemistry Demonstration -- It's kinda sad that it took a show about drugs to make people interested in chemistry, but this may still be worth trying.
Magic Tea Bag Rocket - awesome Science Experiment for kids!
Kikiricosas: Experimento: Invernadero de ventana
Crear Liquido Fosforecente
100 experimentos sencillos de fisica y quimica
Walking Water experiment (and colour theory/ colour mixing too!)
trampa casera para mosquitos