abstract, and vice versa, art, ball, balls, balls newtons, black background, book, christmas decorations, christmas tree, clouds, communications, conversion, demonstration, desktopography, different, energy, fire, fractal, fractals, girl, glow, gnome, highlight, hill, house, kinetic, light, light ball, lights, line, magic, mechanical system, merry christmas, new year, ornament, pattern, pendulum, people, planet, potential, red, reflection, room, snow, space, sparks, species, sphere, star, sun, tree, wallpaper., window