You found a box full of collars while cleaning your attic. Put it one of the nine options and see what happens.

Brown and white is Eevee

Light and dark blue is Vaporeon

Yellow and white is Jolteon

Orange and yellow is Flareon

Purple with one red bead is Espeon

Black and yellow is Umbreon

Tan and green is Leafeon

Light, dark blue and teal is Glaceon

White, pink and blue is Sylveon