This is a palette-shaped tool for measuring how much spaghetti makes a serving (or two or three or four). It might work for other small pastas, but I'm not sure.

(There were some other things posted that did this, but I had trouble getting Slic3r to handle any of them.)

Serving size measurements are from the plans here: http://www.freepastatoolsplans.com/Assembly_4.htm

1. Print.
2. Fill appropriate hole with spaghetti.
3. Boil water.
4. Cook spaghetti.
5. Add sauce, cheese and other ingredients as desired.
6. Eat.

For this design, I drew it in Illustrator, exported it as a DXF with Inkscape, extruded it in OpenSCAD and printed it on a Printrbot using Pronterface and Slic3r. All source files are attached.