Counting on a web camera, a laser pointer (available for about € 20), and a program suitable for this purpose can easily build a low cost 3D scanner.

Python script for Blender scanned:
http://en.myinventions.pl/index.php?page=3Dscanner

BerliOS: free program for scanning 3D with this system:

http://developer.berlios.de/projects/copos/

LICENSE: GPL
Development Status: Beta
PLATFORM: Linux
SETTING: X11
PRICE: Free

http://diybookscanner.org/

Free hardware project to build a book scanner, with instructions and plans online. The software for processing images has also been developed with free license.

http://www3.elphel.com/

Elphel photoelectron is a U.S. company that is engaged in the production of components and digital cameras with open hardware and free software, licensed under GNU. Are exciting possibilities offered by the hardware personalization of open hardware (like free software) assembling pieces of hardware, such as 3D-camera panoramic stereo and offered Elphel.

http://osvideo.constantvzw.org/your-own-private-pirate-tv-station/
http://osvideo.constantvzw.org/wp-content/uploads/ptv_zine_constant_081120.pdf

http://www.photoblog.com/cefolaf/2008/09/05/cosercantar-espaolenglishfranais.html

Coser and singing is a basic manual (and mash) circuit bending technique used Olaf Ladousse (among others) to build electronic instruments he plays with the group LCDD , on the basis of the resistance change circuit of a toy for a potentiometer. They call these instruments Doorags, Doo Rag group in honor of Arizona, who draw inspiration for these instruments.

http://www.drawdio.com

Drawdio is a fun invention that uses the conductive properties of graphite from a pencil to emit sounds through a small synthesizer, making the act of drawing in musical composition or vice versa.

http://www.liquidware.com/shop/show/GMP/GamePack

http://antipastohw.blogspot.com/2008/10/using-inputshield-to-make-open-source.html

Parts to build a video game imitating the Game Boy Pocket but open source, based on Arduino.

http://es.wikipedia.org/wiki/GP2X

Console-oriented software.

http://www.ladyada.net/make/fuzebox/index.html

8-bit console open source.

http://www.arduino.cc/ Arduino open source hardware is based on a board I / O and a single development environment that implements the language Processing / Wiring. Arduino can be used to develop autonomous interactive objects or can be connected to software on your computer (eg. Macromedia Flash, Processing, Max / MSP, Pure Data). The plates can be mounted by hand or purchased, the sofware can be downloaded for free. The hardware reference designs are available under open source license, is free to adapt them to your needs. pot notar l'ambient per la recepció des d'una varietat de sensors, i pot afectar els seus voltants controlant llums, motors, i uns altres accionadors. Is for artists, designers, and anyone interested in creating interactive objects or environments. Arduino can feel the atmosphere for the reception from a variety of sensors and can affect its surroundings by controlling lights, motors, and others actuators. (basat en Processing). The microcontroller on the board is programmed using the Arduino programming language (based on Wiring) and the Arduino development environment (based on Processing). The Arduino project received an honorable mention in the Digital Communities category of the Prix Ars Electronica 2006.