Sprig of mistletoe

A druidic focus might be a sprig of mistletoe or holly, a wand or scepter made of yew or another special wood, a staff drawn whole out of a living tree, or a totem object incorporating feathers, fur, bones, and teeth from sacred animals. A druid (see chapter 3 of the Player’s Handbook) can use such an object as a spellcasting focus.