(My post got eaten; apologies for any terseness)
If we observe a Wand is a 1/day scroll (roughly), then there's design space for permanent Talismans. The price is easy: +2 levels.
What would be a good category name to use?
For example, there's a Onyx Panther Talisman listed as a level 2 item. A permanent version that could be used once a day would be a level 4 item.
But what to call the category?