A little script to paste into https://isitchristmas.com/ to create some cool effects. Preview: http://i.imgur.com/0TJZmmf.gif

activate.js

var count = 0;
var count2 = 0;
var auto = setInterval(function() {

	var centerX = 300;
	var centerY = 300;
	var asd = Math.round(count * 10) / 180 * Math.PI;
	var radius = 125 + Math.cos(asd) * 25; // wave
	var radius2 = 0; // flag
	var radius3 = 75 + Math.cos(asd) * 25; // ghost
	var angle = count / 180 * Math.PI;
	var angle2 = count2 / 180 * Math.PI;

	var x = centerX + radius * Math.cos(count);
	var y = centerY + radius * Math.sin(count);
	var x2 = centerX + radius2 * Math.cos(count2);
	var y2 = centerY + radius2 * Math.sin(count2);
	var x3 = centerX + radius3 * Math.cos(count);
	var y3 = centerY + radius3 * Math.sin(count);

	var dx = x - centerX;
	var dy = y - centerY;
	//var dx2 = x2 - centerX;
	//var dy2 = y2 - centerY;
	var dx3 = x3 - centerX;
	var dy3 = y3 - centerY;
	var rotation = Math.atan2(dx, dy) / Math.PI * 180;
	//var rotation2 = Math.atan2(dy2, dx2);
	var rotation3 = Math.atan2(dy3, dx3);
  
	IIC.setAngle(rotation);
	IIC.makeWave(x, y);
	//IIC.setAngle(rotation2);
	IIC.setPosition(centerX, centerY);
	if(Math.round(count * 10) % 3 == 0) {
		IIC.setAngle(rotation3);
		IIC.makeGhost(x3, y3);
	}
  
	count += .1;
	count2 -= .1;

}, 50);

deactivate.js

clearInterval(auto); count = 0; count2 = 0;