Well just a raytracer in Visual basic 6, thus the name VB6 raytracer. Not because it is easy or logical, but because it is hard. I know this is not the right language to write a raytracer, see it as a stubborn POC that it is still somehow possible.
VBTablet - a quick and easy way to add graphics tablet and digitiser functionality! Working with any device implementing the WinTab API, the de-facto standard, VBTablet does the hard work for you. Supports all COM-enabled languages: VB, Delphi, C/C++,...