I went to a cactus sale yesterday afternoon, spur of the moment, after much bargaining and haggling I made two big scores on some rare cactus, that I've been wanting for some time. These are not very big plants, the monstrose is about 12 inches, and the Azureus is just 6 inches, but I love their wonderful blue color. They are native to Brazil, and can be difficult to get.
Pilosocereus Azureus
and
Pilosocereus pachycladus monstrose