Arguably none of the states of matter, other than solid, can maintain their state without a supply of energy. Water becomes ice when it loses enough energy (heat = energy). It just happens that plasma needs a lot
of energy to stay in state, which makes it seem more fleeting.
About the electrons though, that is true. As for working with plasma though, have you considered a plasma globe
? It can seem a bit gimicky, cause they're generally sold as toys, but it would be an easy (and safe) way to work directly with plasma.
A standard plasma ball has a vacuum of about 0.01 atmospheres of helium, neon, or other noble gas. The gas is excited by a 2-5 Kilovolt 35 KHz electrical supply.
If you're set on working with electricity as a manifestation of plasma, I would agree that lasers are a good representation. If you do work with lasers be careful not to shine it at the sky
and possibly hit aircraft. But I'd love to see what ideas you have for using lasers! They're wonderful devices, and I agree uniquely suited to applications of witchcraft.
One thing that gives me comfort is that the divine spark, energy, electrical nature cannot end, it can only morph or change form. So when we die, spark lives on.
That's the first law of thermodynamics; energy can neither be created nor destroyed, just changed. Fire is the catalyst to that change, both emotionally and literally. Fire can turn paper into ash, but a spark of inspiration can turn a story into a book.
Bringing both together, the word "spark" is even ambiguous in itself;
1: a small particle of a burning substance thrown out by a body in combustion or remaining when combustion is nearly completed
2: a luminous disruptive electrical discharge of very short duration between two conductors separated by a gas (such as air)
3: something that sets off a sudden force
It refers both to fire and
electricity. Whether or not fire is plasma, or fire is electrons, fire is
sparks. Maybe using something that throws off sparks (maybe something like this
)? Sparks are small enough as to be relatively safe for use, as long as you're either a) intending for something to catch on fire or b) not in an area with easily flammable materials.