Optional Equipment
Boiling bags – Another thing you may want to invest in is some kind of boiling bag for fruits, herbs and spices. Cheesecloth will work well, or you can buy `hop-boiling bags' from your homebrew supplier. These make separating out any fruit-pulp or herbs much easier. Disposable boiling bags work great, and you can just toss them like used teabags when you're done. Most of the reusable ones I've seen are made of nylon or some other synthetic so they won't hold flavors from one batch to the next.
Bottling bucket – You may also want a bottling bucket, which will make filling the bottles without getting sediment (trub) from the fermenter into the bottles easier.
Bottle filler – This is a little gizmo that slips into your plastic tubing and has a valve on the end of it. When you press it down into an empty bottle, liquid flows in. When you lift it, liquid stops flowing. This isn't essential, but bottling will be less messy with it.
Hydrometer – This is highly optional for the beginner. A hydrometer is a device used for measuring the density (specific gravity) of a must (fermentables and water mixture) before and after it ferments. The specific gravity is simply the ratio of how many times heavier than water a given volume of the liquid you're measuring is. This, and a little math, will tell you how much alcohol was produced in the fermentation.