Speaker wire terminals, crossover(s), drivers, batting, cabinet, grille. There, come back show us when you're done.
If you have to ask, then forget it. You are better off buying a speaker that is already made. It will be less expensive and you do not have to spend many hours trying to build it. Hope this will help you out.
You will never be able to design and build one for less money then you can just buy one. If you cannot afford a new one, search for a good used one on a classified site such as craigslist.
