Video HDMI is the king of the roost when it comes to audio+video cables. Add an HDMI wall plate for a clean custom look without just dangling your cable out of the wall. These plates also provide some protection for your cables and ports by reducing the strain on your connection points. If you need something different, there are all sorts of plates available such as VGA and component video.
Audio A typical connection type for speakers in a home theater setup are called banana connectors. Plates come in many combinations depending on your speaker configuration and location. A simple two-piece wall plate is barely $2. You can even go crazy with something like a 7.1 surround sound distribution wall plate that also has HDMI for only $15.
If you are running specialty connectors (such as those coming off a video game system) you can use a recessed media box to help tuck your cables back into the wall so they aren't bulging out, often forcing you to reposition your components forward or elsewhere.
Everyone's setup is going to be very different from one another. Wall plates of varying sizes (1-gang, 2-gang, 3-gang, 4). Don't forget a matching mounting bracket so your plate and cables don't just hang on crumbling drywall. There are lots of other plates out there depending on your needs, such as phone jacks, coax cables, brush plates and more. You can also use custom plates to mix and match connector types to your specific need, although those require a little bit of know-how on how to wire the adapters. Whether you go with pre-made wall plates or customize your own mega plate, your options are plentiful to finish off professional looking custom wiring setup. Happy wiring!
MORE CUSTOM WALL PLATES ON APARTMENT THERAPY • How To: Upgrade a Wall Outlet to USB Functionality • DIY/How To: Surround Wiring Install- (GE) Wallplate, Part 2