I've used SketchUp's Sandbox tools for a lot of organic modeling, but never for something like this! This project shows how to use connected strings of letters to "pull up" text from a surface, resulting in something you might want to rest your head on.
This famous illusion presents an "impossible" triangle. It's easy to draw in 2D, but how can you create something impossible in 3D?
This project makes use of the amazing Shape Bender plugin. Among many other things, Shape Bender lets you start with a normal string of text:
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Anyone can design anything in 3D! http://www.3dvinci.net/