Make your very own church/school letterboard sign. Just enter some text and click the 'Go' button.
There's also the Church Sign Generator, a Church of Scientology sign generator and a Westboro Baptist Church sign generator.
(Note: do not link directly to the image generated on this site - it won't work. You are free to download the image, copy it, put it on your own website, or distribute it however you like. If you don't have a website to store it on, there are plenty of free image hosting sites available.)