actually i did a rollercoaster box
i used a lot of wood and it kinda worked. THe picture here ^ is before i finished the box. In did the top part with some wierd resisting plastic.
(i also have some muticolor lights inside it haha, for fun.)
[IMG]javascript:ViewImage('
http://media.nscdn.com/uploads/member/pictures/1132874346BoxPIC_17novembre-005WEB.jpg[/IMG]
(the box is really fun to ride.