Yes, we still have a Wii and the sensor bar is held onto the top of our TV with tape. There are a number of Wii sensor bar mounts on Thingiverse, but none fit our TV. While I was designing it I decided to make it customizable so it can fit a wide range of flat screen TVs. This is a quick easy print that doesn't require any support.
Use the customizer to adjust the mount to your TV. You will need the desired width and depth of the TV side of the mount. Obviously the sensor bar side is always the same. I have also included an angle adjustment if you want to tilt the sensor. I'm not sure it helps with sensor detection, but it was fun to figure out how to write it.
When you print it, a small nozzle will help get you good detail. You'll want at least two mounts to get a secure fit. They print quick with no support and don't use up much filament.