Celebrim
Legend
But if you see wizards as guys with books, knowledge, wands, amulets and rituals, drawing on external sources of energy such as demons, spirits or simply forces in the 'natural' world...
I would argue that the D&D wizard has never been particularly tied to traditions like Shamanism and Diablery. For that you have to look at classes like Shaman, Sha'ir, and Binder. Certainly I would associate the D&D wizard more with 'harnessing thier own personal energies' to a greater degree than I would 'commanding the spirits' (unless conjuration/summoning was their particular specialization).
As for paraphenalia, what about crystals, crystal balls, incense, tarot cards, and so forth? Aren't those 'psionic' trappings, or is the attempt here to claim that 'psionic' and 'psychic' have some sort of sharp division other than genera trappings (it's 'psionic' if you have space ships)?