Pea gravel and pebbles can weigh down windowboxes. Empty water bottles are a lightweight option. Place rinsed bottles inside the planter and add soil on top of them. The space between the bottles will allow proper drainage without the extra weight.
Gabion stone wall at Maleny House in Australia. Designed by Bark Design Architects. This could be great if you left space in the top for a planter or planted right into the sides with moss, air plants, or tiny hidden sculptures.
Architectural designer Sebastian Mariscal and project manager Jeff Svitak created a house in Venice, California, for Michael and Tamami Sylvester. Known as Dwell Home Venice for its role as an exemplification of modern architecture, the house is an homage