My wife rides a green Madsen Bike to pick the kids and even some of the neighborhood kids from school. http://www.madsencycles.com/collections/2014-bikes
I ride a bike with a regular 10 speed with a WeeRide Co-Pilot attached for my 5 year old son. https://www.google.com/search?q=tan...UoAg#tbm=isch&q=weeride+co-pilot+bike+trailer
He also has a 2 wheeled bike of his own. We also have a balance bike for my 4 year old daughter. https://www.google.com/search?q=tan...oLYCg&ved=0CAgQ_AUoAg#tbm=isch&q=balance+bike
I don't know how to attach pictures, sorry.
I ride a bike with a regular 10 speed with a WeeRide Co-Pilot attached for my 5 year old son. https://www.google.com/search?q=tan...UoAg#tbm=isch&q=weeride+co-pilot+bike+trailer
He also has a 2 wheeled bike of his own. We also have a balance bike for my 4 year old daughter. https://www.google.com/search?q=tan...oLYCg&ved=0CAgQ_AUoAg#tbm=isch&q=balance+bike
I don't know how to attach pictures, sorry.