i run a small server just getting started and i wanted to have it so people can left click sign, with a amount of money on it, to open the door and pay that amount. I would like it to hook into to some of the major economy plugins like essentials eco or iconomy. It would also be good for role play. I am just learning java so i don't know much about plugin dev so if anyone could take on this job it would be great.
Throw a little looksy into vault and setting your plugin up with it, it is really easy and will hook onto almost all of the big economy plugins.
SignShops lets you create a device type sign where you can pay to activate a door or other mechanical item.