Not directly relevant, but this post:
Explains how to get the most material/shape bonuses from a talisman.
I am playing a Bonisagus CrHe based maga at the moment, and also have an improved Vulgar Alchemy that allows her to discover new form and material bonuses. Her putatative Talisman is
Rod of Asclepius (+6 CrCo healing, and as yet unknown bonus to diagnosis)
The Staff is a hollow tube made from Iron/sprouting Oak/Lead in a triple Helix.
The Serpent is coiling the opposite sense and is made out of Yddrassilian wood
The Serpents Eyes are Opal and Emerald, with a tongue of red coral.
In its Jaws it is clasping a sphere of clear glass within which is mercury
The fangs are magnets
There are silver rings around the top and bottom of the staff
Sprouting from the midway join of the serpent and the oak is the enriched Mushroom of Virtue.
Materials used: 1 Iron 2 Oak 3Lead 4 Yggdrassilian wood 5 Opal, 6 Emerald, 7 Red coral, 8 Clear Glass, 9 Mercury, 10 Magnets, 11 Silver, 12 Enriched Mushroom of Virtue.
In no way will she ever be able to open all the bonuses, but it is fun to design them. I feel that Magi Bonisagi should be subtly boasting their magic theory by having talismans with lots of material bonuses as a sort of house status marker.
Bob