Cantrip Wand
Wand,
Uncommon
(cost 500 gp)
Crafting Components
Scroll of the cantrip to be imbued and a branch from a treant or awakened tree
This wand can be used as a spellcasting focus and allows you to cast one additional cantrip as if you knew it, as long as it is on your spell list. Each cantrip wand has a cantrip imbued within it upon creation, and will be known by its name (such as a fire bolt wand or light wand).
Other implements exist for the storing of cantrips from other classes (like cantrip holy symbols or cantrip instruments), and though these are wondrous items they function like wands.
Source