Hobbies and Business - Unable to sell items

Somehow can't seem to find how to sell most of the knitted items as they don't snap/fit onto the shelves needed to sell them, ie. clothing, rugs, perfect **bleep**, plant cosys, or hanging plants, any ideas?

Tried just putting them into the store area but theres no option to sell them if they are not on the shelf.

Knitted toys seem to fit ok.