Brownie

Magic Resistance. The Brownie has advantage on saving throws against spells and other magic effects. 

Innate Spellcasting. The Brownie innate spellcasting ability is Charisma (spell save DC 12). It can innately cast the following spells, requiring no material components:

At will:  mage hand, mending, misty step, prestidigitation

1/day: levitate, purify food and drink, unseen servant, tiny servant

Superior Invisibility. The Brownie magically turns invisible until its concentration ends (as if concentrating on a spell). Any equipment the Brownie wears or carries is invisible with it.