Submission by Will Lestrange:
The five pictograms I made all have specific meanings for primitive wizards.
The first symbol, a vertical line, represents the stick that is used as a conduit for magic. (Essentially, these sticks are precursors to staves and wands - and used much the same way). This symbol is the base for most of the other pictograms I depicted.
The second symbol, a vertical line topped with a circle, represents light. The meaning of this shape comes from the way wizards would create light: by making the end of their stick light up.
The third symbol, a vertical line topped with a triangle, represents fire. Once again, the meaning of the shape comes from the way wizards would create fire: through their stick (which they could then pass along to other objects).
The fourth symbol, a pentagram topped with a vertical line, represents a person with magic. The symbolism is as follows: the mysticism of a pentagram represents the magical person and the vertical line, of course, represents the magical stick they hold.
The last symbol, a square, represents a person without the capacity for magic. The squareness of the shape suggests that the person does not have any magical energy - and this is the only symbol that does not contain a stick, representing that such a person cannot make use of any magical objects.
These pictograms would likely be used to convey messages (e.g. if you saw four of the fourth symbol and three of the fifth symbol somewhere, it would mean 'here there are four magical people and three Muggles' in modern language). Most likely they would be made by people magically carving the shapes into wood: by holding their stick over the wood, moving the stick over the wood in the shape of the lines they want to make, and thinking of the shape being etched into the wood. (This is why most of the shapes are made out of straight lines: they are easier to make in this format.)