The first grouping is the elements. There are a multitude of symbols to represent the elements, but I prefer the circles due to the fact there is logic behind them. If you think of each circle being the planet, fire is in the center, earth goes throughout, air is around it, and water is on the surface.

          
     Earth             Air                 Fire            Water
 

The second group is a collection of other symbols.

                                                                    
Man in the universe          Unknown              Hexagram             Pentagram           Wheel of fortune
 

The third group is inverted (upside down) symbols. These have been added due to the fact they're used in later equations.

The following symbols are combinations of the other symbols. Some of these I have seen before, but others are just experiments of my own.

All of the elemental symbols combined. It seemed appropriate to differentiate between earth and water.
 

Combination of Pentagram and Hexagram. This is one I've seen before.

Just because it looks interesting. All of the elements, with the Wheel of Fortune and Unknown. I've never actually seen this one used, but it looks interesting.
 

This is one I've been playing with over the years, and it can be made from multiple combinations:

Man in the Universe, and reverse, with the Wheel of Fortune.

Pentagram, Hexagram, and Man in the Universe.

Six pentagrams the top of each at each spoke of the Wheel of Fortune.

Taking this combination into consideration the symbol includes;

Six Pentagrams, a Hexagram, the Wheel of forune,  Man in the Universe and it's reverse.
 
 
 

              Just for a chuckle, here's a glyph that includes everything discussed above.