A spiky sort of star, from some early playing with csgs.
Slightly more complicated: a standard sort of milk carton thingy.
Somewhat neat: a hinge object.
A flourescent lamp, based on some idle doodlings. This is actually three objects, a base/upright, an extending arm and the lamp shade, so positions can be adjusted.
A cagedoor door, using the hinge shown above. This is two objects, the cage door and the cage wall, so the door can be opened and closed. Animating this, however, uncovers yet another bug in sceda I haven't yet tracked down... :(