Trickster Friend

A spectral, floating small critter (any creature small in size appears at a point you choose within range. The creature lasts for the duration or until you dismiss it as an action. The critter vanishes if it is ever more than 120 feet from you. 
It has an AC of 14 and 3d6 hit points, which are rolled upon summoning it.

You can use your bonus action to control the creature. You can use the creature to manipulate an object, open an unlocked door or container, stow or retrieve an item from an open container, or pour the contents out of a vial. You can also use this small creature to perform lock picking checks, using your own sleight of hand bonus' as its own. You may use an action to cast a spell through this creature with the range of touch, which uses your own spell attack bonus or spell saving DC.
Additionally, if the critter is within 5 feet of an ally it can use the help action, as an action.

The creature can communicate with you telepathically up to 30ft, after which distance it can move on its own and explore at your command.

You can move the creature up to 60 feet each time you use it. 

Upon casting , you can expend a 2nd level spell slot to give this creature invisibility. The invisibility lasts until it takes an action.
You may upcast this to a 3rd level spell slot to give the creature greater invisibility, and increase its HP to 5d6.