Having obtained two bike baskets for small dogs (after careful perusal of options reviewed on DogJaunt, I chose the Tagalong bike basket).
Putting the baskets together was trivial:
Even a child could do it.
For once in my life, I thought I would try taking someone's good advice. In this case, it was MA's advice to train the dogs to get in the basket, instead of just shoving them in, strapping them down, and biking off at top speed.
Both dogs soon came to learn that sitting in the basket earned them treats.
In fact, we turned around during breakfast to see that Tip had voluntarily jumped up and sat in the basket, awaiting his treat.