Description: "Download the file polar_zonohedron.rb and drop it into your Sketchup plugins folder and launch Sketchup. An item called "Polar Zonohedron" will appear under the Plugins menu."
"Use the Save menu item to save the currently active SketchUp model to your file system. When you close an unsaved document, or attempt to quit SketchUp with unsaved open documents, SketchUp will prompt you to save your work before continuing.
Keyboard Shortcut: Ctrl+S"
More Info and tips for "save"; "save as"; "save a copy as" and "save as template": Visit Here
Use the 3D Text tool to create 3 dimensional geometry from text. Activate the 3D Text tool from either the Construction Toolbar (Microsoft Windows), the Tool Palette (Mac OS X) or the Tools menu.
Description: "ToolsOnSurface is a Suite of Tools drawing on curved surfaces, with lines, various shapes, offset and Freehand / Polyline. It provides an inference mechanism, a Contour Editor and a dedicated Eraser."