I bought a sundial in Hobby Craft, it gave me an idea to make my own. I used a plate and a chopstick. To make it accurate I stuck my sundial on the plate and drew lines above the numbers. Then I took the sundial off and wrote my own numbers on. Finally I stuck the chopstick into the plate, we found the middle by drawing a cross.
It works, just like the shop one. This picture was taken at 12:17.