This is the Chocolate Series of planet sculpting tools.
The Chocolate Hill sculpts Chocolate themed hills.
The Chocolate Swirl Pond sculpts Chocolate themed craters.
The Chocolate Swirl River sculpts Chocolate themed rivers.
The Swirly Valley sculpts Chocolate themed canyons.
The Chocolate Truffle sculpts Chocolate themed plateaus.
The Chocolate Squares sculpts Chocolate themed mesas.
The Chocolate Swirl Spirals sculpts Chocolate themed mountains.
The Chocolate Strand sculpts Chocolate themed lava flows.
The Chocolate Swirl Seas sculpts Chocolate themed seas.
Acquiring
These are found the same way as artifacts: by visiting a planet with yellow radar waves coming out of it, using the radar to locate the item, and then using your Abduction Beam to acquire it. They have the same appearance as terracoloring tools, so you can't be sure what you will get.