Wall mount for bikes, you can use a 6mm dowel to prevent the wheel from slipping out. You may want to adjust lenghts and width due to different rim size.
This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/ayndjbu8WsX
2020; Updated the large model with an extra dowel pin hole.
2021; Updated the model with a printable pin