A model of 10 nanojacks (the building block of buckymesh) combined roughly into the shape of a large sphere - if you continue connecting them in this way till you get large objects you can see, they will be 4.5 times lighter than aluminum and stronger than steel - for more info, see buckymesh.com
My red one arrived yesterday and it's great.
6.816 w x
5.996 d x
2.683 w x
2.361 d x