A 'Christmas-tree-in-a-box' arrives at a house (it is inside the house). It sees in the distance, a pile of presents, and identifies this as it's desired location.
It views every object on the way to the presents as an obstacle. e.g. it jumps off of a sofa, rolls under a table, slides along an ironing board.
It finally backflips into the center of the pile of presents.