c8ble is a helpful tool for organizing the headphones/earbuds when you’re not listening to them. I know I could use one of these. Because of its figure 8, continuous shape, c8ble can be used in multiple ways.
Designed by German design firm Voxel Studio, it does not appear that these are yet available but hopefully will be soon. You can contact Voxel Studio to be notified when it’s available.