Christmas cactus is something of an outlier on this list, since it’s a forest cactus rather than a true desert succulent, and that distinction actually makes it better suited to indoor life than most of its relatives. Unlike desert succulents that demand intense, direct sun, Christmas cactus genuinely prefers bright, indirect light, making it a comfortable fit for a spot a few feet back from a window rather than directly on the sill. Its segmented, flattened stems stay reasonably compact, and with the right seasonal light cues, it rewards patience with vivid pink, red, or white blooms in winter, offering more colour than most succulents manage indoors.