We have a white egg shaped board, suspended from a gibbet, which hangs out enough that passing traffic sees it. It has to be repainted every winter, so we change the price then, if necessary. The message is 'Free range hen eggs, £1.50'. On top of the gibbet we have a large tin chicken which definitely attracts attention. The whole shebang can be taken down when there are no eggs, as at the moment (it's heavy though as anything here sticking up into the weather has to be sturdy). Our road is quite quiet so passing trade isn't huge, but we have many regular customers and the occasional tourist.