A teaspoon is a small spoon designed to hold a measure of tea, which is also used to stir the tea once in the cup, especially if milk and sugar are added. It is also used as a 'standard measure' for cookery and medicinal purposes.
Decorative teaspoons are produced, using enamel or other materials on bowls or tops of the spoon, often of plain colour or simple images. These can be produced in boxed sets (often of six) - which may appear on TV programs dealing with antiques and collectibles
The Wikipedia page is [1].