I forgot to mention the Christmas cactus before. I had made up my mind to buy one. We went to Home Depot and just inside the door they had a display of forlorn Christmas cacti with no blossoms. Marked down from $8.99 to $2.19. Little buds were in the pots, fallen off because they weren't watered, probably. The plants looked fine and were well hydrated, probably just too late to save the blooms.
I made myself buy just one, since that was my original plan. Next year I'll have one in bloom.