But again most of those items would not be saleable in a merchandising environment which is supposedly supposed to be in world. I agree that there is much more merchandise to be made from Star Wars but how much of that is it possible to market as an item that someone on Batuu in whatever year they're setting this in would be able to buy?
So now you just want to talk about the land itself and the specifically themed shops and only unique in-universe stuff? Okay. Just the obvious stuff and stuff we know about -
Build-a-Droid.
Build-a-Lightsaber.
Encase yourself in carbonite trinkets
Star Wars dolls and figures (notice young Jyn has a stormtrooper doll in "Rogue One" - they exist in SW, I'm sure they will be here)
Costume pieces (helmets, belts, etc.) - Imperial, Mandalorian, Rebel, First Order ("surplus" junk dealers in Star Wars sell this stuff)
Kid-friendly blasters and other equipment with dozens of possible designs
Star Wars housewares (glasses, plates, utensils) as seen in the films
Small items like communicators, droid callers, thermal detonators, etc. made in any way from kid-type plastic to adult-collectable quality
I could go on and on...it's a lot more than wands and robes.