Ok, so you leave your car at home and commute on a bike. Good work. But if you really want to look the part you should step over to Etsy and strap on a Bike Planter.
"Do you love riding your bike? What about plants? Bring your plants on an adventure and let them enjoy some sunshine and fresh air! If you've ever dreamed about attaching a plant to your bike, now you're in luck! This bike planter is made with 3D printing, so not only will you be showing off your love of nature, but you'll be showing off a little piece of the future."