Question on hard to catagorize items.

Hi, I've been trying to go through quite a few categories and fix incorrectly categorized items. However there are a few I'm a little stuck on, like all of the melodicas we have on here, about half of these are in accordions and the other half in harmonicas. Ideally we should probably have a unique category for them, but if that doesn't happen where should they be put?

I also have found quite a few guitar cables and patch cables in the "guitar and bass parts" category, is this the correct place for those? It feels a little weird to me because these aren't really parts per-say.

https://equipboard.com/items/cristal-baschet is also kinda a rough one, we don't really have a place to put this, so I haven't touched it.

Obviously a melodica is more like a harmonica than an accordion... there are some crazy people adding content to this site. This shouldn't even be a question. Oy.

The cable categories have always bothered me too but have yet to be addressed... I dunno.