At the request of Tresob I've put together these parts to aid in displaying your minifigures.
The idea being that the figure could be solidly pegged into a platform but still be positioned as if walking. Ideally he wanted the part in transparent but I'm sure that builders could come up with all other sorts of uses for this part. The part has two openings so that one way you will have a 30º slope but if you plug it in the other way you get a 60º slope.
I have yet to test this part but my measurements are exact to within 0.01mm Enjoy Link to Shapeways