Here is an underwater desktop GLSL shader node I made with Fractal Brownian Motion ( FBM ). you have control of Gain, Amplitude, Lacunarity, and amount of Octaves the noise has. Depending on these settings will change how the waves look.
Instaclock is a beautiful and clean clock* screensaver. Once activated it displays an instagram containing the image of a clock reading the current time within a 5 min range.
*I really want to call it a 'timepiece' but it just feels too pretentious.