Pottery and ceramic fanatics will love Yingge (鷹歌). The town lies roughly an an hour south of Taipei by train, and is famous for it's high concentration of potters and ceramic makers. Some potteries offer lessons in basic pot making.
To get to Yingge, take the train south from Taipei Main Station to Yingge Station. Plan to spend at least a day in Yingge to get the full experience.