The juxtaposition of two different environments can provide unique visuals and interestingly, harmonize the energetic frequencies of a space when composed in a balanced manner. This was the case my client in New York City. Looking outside their window, they have an amazing view of beautiful architecture. On their window sill, they began to include a minimalist display of plants. This subtle combination seems to work really well and almost, looks like a painting. Utilizing the outside environment and highlighting that from the interior of your home, is another fun and creative way in how you could boost positive energy.
Naturally, pay attention to what the outside surroundings look like. If they feel and look unhealthy and agitating to your eyes and emotions, than this concept may not be the best to implement.