I’ve been sitting on this one a while and I think this library is ready for some consumption. I created ModelBuilder earlier this year partly as a fun project, but also so that I could get some better test data to work with when doing test automation in C#.
The library provides an easy way to build model classes with random data where the data is better quality that just Guid values for string properties or Environment.TickCount for integers. It also has a lot of extensibility points so that you can customise the model generation.
You can get ModelBuilder from NuGet by running Install-Package ModelBuilder. The following is the documentation for the first release.