Bass Guitar Cases
The first thing you will want to do is protect your new investment. This requires a sturdy bass guitar case. Cases come in various styles and materials. The lower-end cases are very thin and don't offer much protection if you plan on toting your bass around town. There are sturdier cases which are molded and padded on the inside. These cases have a hard shell and the padding keeps the bass secure. I'd highly recommend a molded case if you will be doing a lot of traveling.
Extra Bass Strings
Bass guitar strings are relatively sturdy but it doesn't hurt to keep some spare strings handy. There are several types of bass strings available to include flatwound, roundwound, and groundwound.
Bass Guitar Straps
Depending on the bass you purchase, it may already come with a strap included.Of course there are various types of straps to choose from as well. The most popular guitar straps are usually made of leather or suede. Many are often woven and come in a variety of colors to suit your tastes. If you're not into the fancy straps, you can always choose between vinyl and polyester.
Extra Guitar Picks
Out of all of the accessories you can have for your bass, the pick comes in more styles than anything else. You can choose from hundreds of colors as well as the thickness of the pick. Having multiple guitar picks always comes in handy.
Guitar Tuner
Keeping your bass in tune is a must and there are various types of guitar tuners available on the market. They all range in price from lower end tuners at $10 up to high-end versions that go for $100 or more. If you're a beginner, it's probably safe to stick to a low-end model until you become better at playing the bass.