Crafting version of a training dummy?

[TheodoreMcIntyre]

I think all SE need to do if they ever want to give us this, is creating extra recipes that require very cheap mats (like the lvl 1-5 recipes), and the end product can just be some trash item (with fancy name).

That is what I had in mind, yes.
Though, I cannot stress how crucial it would be to have those items sold by vendors
Otherwise, it might end up being extraordinarily expensive and kind of defeating the point, if only because people would farm the mobs that drop them and end up skyrocketing the price