I've had a few cacti blooming lately - my Rhipsalis pilocarpa, Schlumbergera truncata, and one of my two Gymnocalycium friedrichii. Here are some images of the beauty! Unfortunately I don't have a good photo of the Gymno because its bloom was infested with aphids - in spraying it with neem oil, the aphids have died but the bloom is also not doing so hot. I'll get a photo to share at some point, though!
Interesting things to note about the below two plants: the R. pilocarpa flowers apparently have little scent but what there is smells like a musty basement; the S. truncata is a very difficult plant for me to grow and this is the first time I've gotten one to flower; the S. truncata was purchased on sale without flowers and I did not know it had two different bloom colors.