Elena's_Invisibility_Shell

A small object you touch becomes invisible until the spell ends. The spell ends if the objects are used in an attack or to cause damage. Items inside the object will remain invisible as long as they are inside. (Something drawn out of an invisible bag will become visible.)

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, you can target one additional object for each slot level above 2nd. Casting on medium sized objects requires a 4th level spell slot, large objects a 6th level spell slot, and huge objects an 8th level spell slot. (So two medium sized objects would require casting it with a 5th level spell slot)