I believe in general that sigil magick belongs to the chaos system but the broadness of it is like an umbrella.
There are sigils that are designed to siphon energy of others, given deceit that this sigil was designed for everyone else to use at their disposal — the practitioner can use it just like a lightning rod where all energy charged into that sigil goes to the rod (the power of the magician).
So be weary of any dodgy sigils online or some books that may have them. I don’t know how to differentiate trap sigils from others until it’s been opened or it’s been told. But some you can glance at and can depict that there is a particularly energy you shouldn’t open.
So with the chaos system, it’s flexible and can be designed to your creativity and wants - so you can design your sigil with the intent for removing obstacles and exert your own energy into it so that it is charged.
People burn the sigil, believing once it’s been charged with energy and intent to be released into the aether as it was once or to have them simply lying around with the belief of forgetting about it. How can you forget something you’re trying to forget? Maybe less attention…
To one’s higher self, or to the Godhead. The interpretations offered by sigils are always subjective by experience, and they offer a gate to transcendent awareness and beings. But they are not the transcendent consciousness, but merely the pointers to that state.
Many other magical and mystical tools can point the user to these higher states of consciousness.
Talismanic magick I have extremely little knowledge of, but it is powerful and from how I was taught talismanic magick should always go by what works best for you so if you lack drive you’d want to work with the metal iron with Mars exalted on Tuesday for example… and so speaking of the planets…
For planetary purposes, their sigils are used in conjunction with what’s often seen in the Thelemic tradition; the rituals of the Hexagram provide a means of engaging with planetary Magick. They can be used to invoke or banish the planets, either singly or in concert. To do this, particular planets are assigned to the points of the Hexagram, exactly as with the elements and the Pentagram. The correspondences are based upon placing the Hexagram upon the Tree of Life, which aligns a Sephirah and its associated planet to each point.
There are two exceptions. The Sun in Tiphareth goes at the geometrical center of the Hexagram, and Saturn in Binah goes at the topmost point standing in for the unity of all three Supernals.