1. Any bike can have a basket attached. Go to a bike shop – not Toys R Us. We grew up in Brooklyn without a car. Okay, without helmets too but hats do fly off, and every bike had a either a front basket, or back “saddle bag” baskets.
2. Train them young! My three year old wears one when he rides his tricycle! It doesn’t fit him very well, but it’s the concept and the habit. I don’t enforce it on the trike, but two-wheeler with training wheels – no helmet, no bike.