There are many apps for saying the Rosary on your smartphone. Michael Guglielmo, a Catholic and a keen cyclist wrote with an idea that he has come up with for a bicycle handlebar Rosary attachment. Unlike smartphone apps, this is one you make and install manually. Here are the instructions:
There's not much to making it. Two decorative pipe cleaners, two light brackets, two longer screws to replace the short ones that came with the brackets and one or two old rosaries which I hope would carry their former blessings with them. You can also use craft store beads and with the intent of bring the completed project to church for a blessing. The beauty of this is that the pipe cleaners hold the beads in place so they stay in place when moved. In addition, if it breaks, the beads don't scatter and its an easy fix.Michael does add the caveat that it should only be used in safe areas. Probably not wise to use it when weaving through traffic in central London.