Aesthetic tags?
I go to this wiki mostly to check new gear for aesthetics. Keep it simple and broad as possible, to minimize burden. My recommendationded tags:
Colors: Simple seven, with in-between colors set to closest approximation. Eg, teal as a green-blue set to green, turquoise as a blue-green set to blue. Doing both is fine too, eg blue, green.
Red, Yellow, Blue,
Green, Purple, Orange,
Brown, GreyScale (For exclusively black/grey/white)
Materials: Mostly I've seen these self-evident, either in name or visuals. Otherwise, there's the catch-all UnknownMat.
Fire (eg lava), Water (eg ice), Nature, Metal, Cloth, Leather, Feather, Scale, Exoskel, Fur, Spirit (Incorporeal eg ghost, rainbow), Undead (Corporeal eg bones, blood), Tech, UnknownMat (Vague, ambiguous, and/or intricate).
Motifs: None. It's tempting to want to tag motifs, like air or valentine, but the inconcrete nature of motifs can over-complicate tagging which can waste energy from controversy over nuances. "Technically…" "deserves It's own tag" "one item tag" "umbrella tag" "tag implies…" "appropriation" "gender" etc.
Examples; Ethereal Wing, Aes: Green, Feather, Spirit. Dage, Aes: Blue, Spirit, Undead, UnknownMat.