Make your own rat-shaped shadow puppet then use it to try some shadow experiments.
This image from a medieval illuminated manuscript shows the sun and moon arguing over whose light is the best. Colour in this detailed picture and then decide who is the winner...
Make a wonderful water lily that opens in water.
This type of tropical flower is pollinated by beetles. In the daytime these stay hidden inside the closed flower. If you want, cut out the beetle and hide it inside your flower before placing it on water!