There are several accessories for your rack to carry even more gear, for example. The most popular accessory is a carrier cushion. With this you can easily take someone with you on the back who can also sit comfortably.
To take more stuff with you, you can also choose from a luggage carrier extension or a luggage carrier widener. With a good luggage carrier, taking stuff along becomes an easy job! You can also equip your luggage carrier with straps, which allow you to easily attach your gear to the carrier.