Tilator lets you tile various pictures. There was an early version used for geometrical tiling and a fuller version used for tiling themed pictures in a variety of ways.
This second tool was a result of experiments for a new Dan Zen interface after the Pagoda of Games. Dan Zen always wanted to make a map interface where you could look through swirling clouds and follow the map to the various games. The swirling effect, or as far as worked out, is part of Tilator.
As it turned out, the experiments and further thinking led to a new interface involving trees and blossoms and will most likely launch when the Deck of Creations becomes old.