1.   For readers living far from a bookstore, the system offered a convenient alternative.

2.   Kyes become a convenient alternative.

3.   Millions of Americans use plastic as a convenient alternative to carrying cash or as a way to earn bonuses, such as airline frequent-flier points.

4.   Most of the vans charge a dollar a ride and operate in Queens and Brooklyn, providing a cheaper and often more convenient alternative to public transportation.

5.   Particularly here among new immigrants in Southern California, the swap meets serve as a convenient alternative to malls.