Although using a lot of custom elements, which can be found here and weighing in at precisely 140 grams, including a rather heavy stand.
I would like to present to you;
Aeronaut. A personal air levitation transport automaton device.


Aeronaut; a hoverboard inspired by 'Around The World In 80 Days'. (FlickR Gallery)
I know it won't exactly meet the four criteria, but I had fun making it; I wanted to make something 'steamy' for a while now, but didn't want to stick to the obvious brown/gold/grey color scheme. And tried to keep it to a certain style I'd like to use. This build could easily be turned into a helicopter as a alternative build and the scifi fantasy theme helps it connect to many other themes out there; imagine you could travel the globe, fight evil (sky)pirates with your companions, find hidden artefacts and treasures, visit foreign empires and forgotten civilizations, explore strange new floating rock worlds... With the aid of some steam(crystal) powered contraptions you've invented.















