Journalist Peter Wagner runs MeisterStunde, a web magazine where he interviews master craftspeople and creators. (MeisterStunde is German for "Masterclass.") His interview with Toni Roith, a blacksmith who specializes in historical restoration work, was conducted in Roith's home. There we see some rather unusual ceiling lamps that Roith has made:
These can be moved to cast light on different parts of the room:
Creative, low-tech and form-follows-function.