Folks who carry their bikes on Caltrain use station tags to help one-another know where to "stack" (or not) their bikes along the parking rail inside the train car.
I decided to make a robust station tag for my bike.
I'm starting a new job on Monday up in Mountain View, so I've decided to use my bike to ride to-and-from Caltrain, instead of parking my car at the Caltrain station for $5 per day.
I live about 1.5 miles from the Santa Clara station and the new job is about 1.5 miles from the Mountain View station.
I made this at TechShop
in San Jose.