In bloom as I write this are a flamingo flower (Anthurium andraeanum), a crown of thorns (Euphorbia milii), and a Cyclamen (Cyclamen spp.). Just finished blooming is a Thanksgiving cactus ...
If you want a zinnia-like flower that thrives in begonia growing conditions, both anthuriums (Anthurium andraeanum) and orchids (Dendrobium) love lots of humidity and reduced light. Snapdragons ...