Lightning, for example is one. Auroras would be another, which are little more than energetic electrons, all of which happen to not be moving in a totally uniform direction. Lesser-known examples would include: volcanic eruptions, hurricanes and snowstorms.
In truth, electricity is not a 'thing' to be observed. It is simply a difference of potential between two points. As long as the difference exists, and there is a proper, closed path between those two points, it can be said 'electricity' exists and the difference will attempt to equalize as long as electrons can move readily from one of the points to another. Electricity may also 'exist' by virtue of potential difference.
So it could be said that one can 'see' electricity in that one sees electrons move (giving off visible light) as potential difference attempts to balance. It can also be said one can 'see' electricity in that a potential difference may be measured and rendered graphically using an o-scope.
Here are some visible examples of electricity.
From left to right, top to bottom:
- High-voltage filaments, plasma lab
- Terrestrial lightning
- Solar filaments - Electrical discharges from the Sun's surface.
- Auroral discharges around Saturn's poles
- Ant nebula -Electrical discharges along a star's magnetic axis
- Galactic jet -Electrical discharges from an active galactic nucleus.
Here is another example, Tesla-approved.
As for proving the case of the Divine, you show the effect, but no observable or measurable cause. It is only your own personal belief that all the varied forms in the Universe come from a divine source. But i'd be happy to debate it further with you.
Personally, I feel if something is out there that is divine, we, as humans, most likely will not comprehend it until we get there to greet it. And even then, only maybe.