I bought a couple of old Zeiss Ikon folding cameras from ebay, a 6x6 and a 6x9. They are from the 1950s and so have coated lenses, but are otherwise quite similar to the 1930s models. Both cameras are still in perfect working condition, accurate shutter speeds.

It's such a pleasure to use them: compact form factor, requires deliberation, they smell good too :)

The aesthetic quality of the images they produce is well worth the effort - pretty sharp when you need it but soft around the edges when aperture is wide open which can look lovely, nice color rendition, amazing bokeh.

I take a lot of digital photos but for me using vintage cameras is so much more rewarding.