This is the most complex part I have designed so far. It doesn't look all that complicated, but there are a lot of separate pieces of geometry that have to fit together just right in order to make a printable model. The original concept came from an architect who wanted to make a building comprised of multiple curved stories. So I made a number of modifications to that basic design and finally came up with this version. It printed in 19 1/3 hours using a layer height of 0.200 mm and a print speed of 80 mm/sec.
The lamp is designed for an LED "puck" light. Battery operated lights are about $4 each; simply do a web search for "LED puck light" to find several sources. This blog page tells where you can get wall powered lights that are brighter and that work very well: http://birkbinnard.com/blog/wall-powered-led-lights/.