Programmer credits:

Hold [Option] and display the Apple menu. Then, select the "About
Adaptec Toast…" option.

Hidden options:

Hold [Alt] and click on the bar in the bottom left of the window. New
options including eyes, the U.S. national debt, and phases of the
moon will appear.

Christmas countdown:

Hold [Option] and click on the "Selection" menu at the bottom of a
window.