My grandmother had several little cactus plants in her house for many years. I seldom see them anymore.
Last May we were in Tucson and went to the High Desert Museum. They have a huge outdoor desert garden filled with the most amazing cacti I have ever seen. We spent the better part of a day wandering about and marvelling at the magnificent plants.
I'm not really into houseplants. Whatever my wife wants to keep is fine with me but I may have to start watching for these in the stores. Can't be used for toilet paper so there should be plenty available.
Did somebody say...cactus? My wife and I love our succulents. Here are a few we've collected and saved throughout the years.