A cheap enameled canning/stew pot (standard 3 US gallons) is about right for a sweater's worth of fiber. You might at most want a vegetable steamer to put in there, some measuring spoons, and I use disposable chopsticks recycled from takeout adventures for stirring. The only place where you might want to invest good money is in your dust mask, and in brand-name plastic: Saran Wrap (original) and Ziploc bags will be easier to manipulate and will not melt in the later stages.