Larger than a breadbox
I've also been spending a lot of time writing solitaire games. Here's some links to games you can play right in your browser (or on your phone): Freecell Solitaire, Klondike Solitaire, Flower Garden Solitaire, Spider Solitaire, Sea Haven Towers Solitaire.
Never worry about theory as long as the machinery does what it's supposed to do. -- R. A. Heinlein
If you feel so inclined, you may browse my CD collection...