This is actually concerning my crafter:

At the mom, I'm dropping magery to squeeze in carpentry, now the question is: how much can I substitute with items?

Sure 30 on jewels and the another 15 with the tome of lost knowlegde. But that's the only arti i can think of, that has a magery bonus. Am I missing something, or is that it?

There are some crystalline rings on Great Lakes right now and they have +20 so there would be an extra 5 there over the 15 on a regular ring. You could also go with a ibrary talisman - treatise on alchemy and swap it out when you are crafting and working with other tailsmans. I will see if I can find some more.

The talisman might be an option, the crystalline ring is way to expensive for my crafter. Same goes for the mark of travesty, I just remembered.

But for the record:

15 bracelet
20 crystalline ring
5 treatise on alchemy
10 mark of travesty
15 tome of lost knowledge / crafted spellbook

65 in theory so far. Not too bad. Let's see if find some more...