This is probably the smallest box camera ever made: a 1/8th scale Kodak Brownie No 2C miniature originally made for Queen Mary’s Doll’s House. And no, it’s not a toy. It’s actually a fully working camera, as you can see from the tiny photograph next to it. The camera never actually found its way into Queen Mary’s Doll’s House, and now it can be admired in the National Media Museum in Bradford, England. Another miniature that was made for Queen Mary is that of a Kodak Autographic No 3A, according to DSLR Magazine. Sadly, there is little information available on either camera.
So if you want to check them out, you’re going to have to make the trip to Bradford. Or you can buy this book, where they are mentioned.