The Konica Wai Wai camera is one of those strange cameras that only the Japanese can imagine.
image from here
Selling for less than $10 USD, this disposable camera has a 17mm ultra wide angle lens. There is a mirror attached around the lens for taking self-portraits. Taking self portraits with a whole bunch of people is great fun, and very easy. The camera has a fixed aperture of f/8 and fixed shutter speed at 1/100. A flash is included for indoor pictures (an absolute necessity).
The minimum in-focus distance is 40cm, which is somewhat limited for such a wide lens. For people pictures though, it’s perfect and produces very interesting effects.
There’s just one tiny little problem: this thing is disposable. Luckily, Konica has designed it well enough that people discovered a way to reload the film! It made me a bit nervous but the result was worth it.