This would be a fun idea when done in a more vintage way.
Outside the patio doors in the entrance way of the new house
Planter idea with a colander , awesome!
i like the stacked height pot idea
give your entrance a polished look, and they can enhance any effect you're going for. Mass tumbles of old-fashioned blooms in weathered tin or tole tubs for a cottage; stick with variegated greens and sleek containers in a modern setting. For a traditional house, create a symmetrical grouping of palms, ficus