On a balmy December day, Vincent Gibbs was meticulously hanging twinkling blue and white snowflakes on a tree in his yard with a long pole. “It takes a lot of maneuvering,” he said.

Every December, the longtime collector of all things Christmas decks his Germantown home with 13 trees to display his glimmering collection of antique and vintage glass ornaments. Gibbs has been collecting them since childhood, inspired by warm family memories of the holiday.