I bought this for my 6 year-old son when he was given a school project title of "Find out how something works". The kit clips together very easily. Making the shutter/pinhole assembly is fiddly (adult help certainly needed), but the results are brilliant!
The resulting photos were better than I dared to hope. Resting the camera on a solid surface is a must, but it really does work. Remembering to wind on is a challenge, but the educational value is tremendous.
One tip - remember to find a firm who will develop and print the films BY HAND. The pic are not evenly distributed along the film, so a fully automated machine would be a disaster.
Fantastic product. We'll be using this again and again.