Basics from Button Bird -- Over 200 different styles and lots of colors for your more everyday uses or to keep the cost down. Most are better than a typical basic button.
Dark Pink with White Dots Round Plastic Button, 9/16" or 11/16"
Bright Green Shiny Agoya Shell Button, 9/16" or 3/4"
Black Corozo Tagua Rounded Square 2-hole 5/8" button #426