Those in education may get a kick out of this especially!

An elementary school class started a class project to make a planter to take
home to their parents. They wanted to have a plant in it that was easy to
take care of, so they decided to use cactus plants. The students were given
greenware pottery planters in the shape of a clown which they painted with
glaze. The clown planters were professionally fired at a class outing so
they could see the process. It was great fun.

They planted cactus seeds in the finished planters and they grew nicely but
unfortunately the children were not allowed to take them home...the cactus
plants were removed and small ivy replaced them and the children were then
allowed to take the planters home.

The teacher said cactus seemed like a good idea at the time!