I am familiar with that Lutheran practice, which I think is more broadly used in other Protestant Churches. I also noted that they have some chalices with a spout on the side for pouring consecrated wine into this "individual serving" glasses. These glasses, BTW, are identical to the containers used for individual "shots" of cream for coffee during my childhood in western Canada.

The practice you describe is the only one I am know that resolves the reluctance of modern humans to share a common cup for hygienic reasons. I like the symbolism of unity in blessing the wine in chalices first before pouring into smaller servings.

BTW, I understand that sometimes the small glasses are owned by the communicant and brought to church every Sunday for this usage.

Why are you sad, senior ;-)