What you need...

For the experiments you need just one electronic component. You get it in electronics stores or via the Internet.

All you need... (Enlarge)

From your electronics-lab you need...

These electronic components you need...

In the experiments you will drain the batteries. If you want to repeat the experiments, it is useful to use rechargeable batteries. In this case you need an additional charger.

If you want to set up experiments from the section "Know more", you need additional components...