I know you can smelt some of them into dwemer ingots, which I have done, but I have some dwemer things left like cogs and various other things that I can't smelt. Should I just throw them away or are they used for something else?
I believe Dwemer stuff that is labeled either "large" , "small" , or "bend" can be molten into ingots. Not sure if any other, but pretty sure about these.