I would suggest bypassing anything you find too constricting with a larger and more adaptable system. For instance you could have the magic be inherent to a system of printed designs or glyphs which operate more like components on a circuit board then letters in an alphabet, that way characters can focus from whatever they chose to write/engrave on, be it wands, books, staffs, stones, jewelry, tattoos, graffiti, etc.
As a bonus it can provide a rule set similar to modern electronics. Most vanillas don't understand how it works, just that it does. With a bit of basic understanding, you can get a vague idea of what simpler magic crafted items can do just by looking at their layout, while the really complex stuff is like trying to interpret the schematic for an f-16 guidance system. Theoretically, you can do anything from a set number of components, but as the functional sophistication rises, so does the physical complexity of the item. Lastly using anything in a way it wasn't designed for can seriously damage it or cause it to explode.