This is a nice happy button. The person who made this must have purchased a button-making kit.
Button-making kits allow people to make dozens of custom buttons.
A small knob or disk secured to an article of clothing and used as a fastener
by passing it through a buttonhole or loop is called a button.
Buttons are also sometimes (usually) circular metal or plastic badges
bearing a stamped design or printed slogan.
Buttons come in many shapes, colors and sizes.