playing around

void mainImage(out vec4 fragColor, in vec2 fragCoord)
{
    vec2 uv = fragCoord.xy / iResolution.xy;

    vec2 p = uv * 2.0 - 1.0;

    p.x *= iResolution.x / iResolution.y;

    float t = iTime;

    float accum = 0.0;

    for(float i = 1.0; i < 6.0; i++)
    {
        vec2 q = p;

        q += vec2(
            sin(q.y * i + t),
            cos(q.x * i - t)
        ) * 0.08;

        accum += 0.02 / abs(length(q) - 0.3);
    }

    vec3 color = vec3(
        accum * 0.1,
        accum * 0.8,
        accum * 0.6
    );

    fragColor = vec4(color, 1.0);
}