At the moment I am 'inventing' something called a 'Automatic Level Crossing'. It is going to be for Hornby trains. I am inventing it in a club at school called Inventor Centre. I made a poll about it last month and will reuse it for this month, now you know what I am doing! I have until about the 16th of November to finish it (after the school holidays (NZ) (if you go on the Inventor Centre blog and see there are only three weeks left and are confused, it is because he (the teacher) isn't counting the school holidays)) and I have done about a third of it - the base, nailing the track down and the level crossing arms!
The website for Inventor Centre is here:
http://www.inventorcentre.blogspot.com/.
Mathsman