Left -Dracaena Janet Craig Compacta - clear glass vase (Walmart) Right - Sansevieria - ceramic planter (IKEA).
This photo from my archives reminded me of my deck in San Diego where I could take pictures outside. The photo has obvious faults but I found the shadow patterns interesting.
Both plants are growing in expanded clay pebbles, known widely as hydroculture. The pebbles are porous and have excellent oxygen holding characteristics.
It is a very low maintenance method of indoor plant care. If not for the research I do, I would convert all plants to clay pebble hydroculture.