I've mapped several towns near Mannheim, Hessen, Germany: Bürstadt, Bobstadt, Einhausen, Lorsch, Hofheim and Biblis. I'm currently working for Lampertheim and Worms.
Initially I started with an A780 handy using the free bikeator Software. But later I developed a simple NMEA Logging application for my Medion PNA 425, which gives better GPS measuring results. I'm mapping with JOSM.