Help an inventor in the Old West perfect his designs. Start by using the console to solve a sliding tile puzzle.
This drops a crate, and you can use the pieces to build some pull-loops, which you should then pull.
This yields even more pieces, which you can use to fix the prototype and make a trackball port.
Roll toward the camera to open the nearby chest, and complete the mission.
You can also borrow the tumbleweed.