Hello 3dgreg.

Thanks for the compliment.

I need to take my own advice.  I've created a few little utilities, but never created a single model.  Of course, that's because I enjoy writting code. 

I also like the idea of using themes.  Holidays and historical were mentioned, but there are thousands of themes you can build a whole collection around.  Mermaids and other legends, your favorite TV show or book, your favorite Anime or Cartoon,  Sporting events, and Schools are just a few possibilities.

My basic rule is that if I am not having fun, I must not be doing it right.

                -David