Composants électroniques gratuits / free samples
http://www.opencircuits.com/Free_Sampleshttp://www.ladyada.net/wiki/doku.php?id=findingparts:sampling
http://www.dutchforce.com/~eforum/index.php?showtopic=4241
http://www.uchobby.com/index.php/2007/04/22/free-or-cheap-hobby-parts/