How do I make a simple electrical circuit that oscillates as a sine wave?

Question

The only electronic supplies I have are: Capacitors, resistors, diodes, switches, light bulbs, wire, and a bar of ferrite to make an inductor.

Answer 1

can't with those components. You need something that can provide gain, like a transistor or an op-amp or a vacuum tube. Plus DC power to power them.

Answer 2

You won't be able to do it, in my opinion.  First, you have to consider what are the minimum requirements to make a system oscillate?

1. RC or RLC tuned circuit at either the input and/or at the output.

2. Feedback is required from output to input such that the feedback signal is "in-phase" with the output.

3. An active component is required to provide a small mount of amplification between input feedback signal and the output signal in order to offset circuit losses.  Only an active device such as a tube, transistor, or Op-Amp can provide the necessary offsetting burst of signal amplification.

If your system can provide some form of tuned or timing circuit that is time and/or frequency selective; can provide in-phase feedback between output and input; and can generate enough amplification to offset losses, it will oscillate. Without anyone of the above listed 3 components, a circuit will not oscillate---as far as I know.