My Sansevieria plant ( mother-in-law’s tongue) has suddenly grown a flower spike. I didn't even know that they produced them and having done a bit of research, they seem to by quite rare! It will be interesting to see how it develops.

https://www.gardeningknowhow.com/houseplants/snake-plant/flowers-of-a-sansevierias-mother-in-laws-tongue.htm