I got me a Lensbaby "Tilt Transformer", which will let you put a Nikon lens on a M4/3 body and tilt it to change the apparent depth of field.
There's no precision adjustments, so it's a little fiddly (and focus and aperture are manual), but then it's less than 1/5th of the price of a Nikon tilt lens, and you can use different focal lengths on it.
Below is tilt along the plane of the subject, and then opposite that plane, which is popular at the moment to make things look like tapletop photos. It's a Nikkor 24mm F:2.8, first at F:11 and then F:2.8
With the modern lenses without an aperture ring (Nikon G lenses), you have to adjust the aperture by unlocking the lens and turning it, which is less than optimal, so I used one of my old-time lenses.
Here is a wiki article about tilt (and shift) lenses/photography. It's not that weird once you get your head around the geometry.