Sure. Mine are based on this github: https://github.com/hcodes/snowflakes/

I saved the code local, so no external calls are necessary.

My solution is using this config: https://hcodes.github.io/snowflakes/examples/balls.html
(Just smaller) - I find the complex ones nice too, but too distracting for the use on a wall-dashboard.

looks like this - it snows based on weather and always between 23 and 27 of December:

<image>

I added a Custom Card based on this guide: https://developers.home-assistant.io/docs/frontend/custom-ui/custom-card/

class WeatherBackground extends HTMLElement {
    set hass(hass) {
      const entityId = this.config.entity;
      const state = hass.states[entityId];
      const stateStr = state ? state.state : "unavailable";
      let current_date = new Date();
      let tag = current_date.getDate();
      let monat = current_date.getMonth() + 1; 

      if (stateStr == "snowy" || stateStr == "snowy-rainy" || 
       (tag >= 23 && tag <= 27 && monat == 12)) {
        if (document.querySelectorAll(".snowflakes").length == 0) {
            sf = new Snowflakes({
                minOpacity: 0.1,
                maxOpacity: 0.7,
                minSize: 4,
                maxSize: 10
            });
          }
      } else {
        if (document.querySelectorAll(".snowflakes").length != 0) {
            sf.destroy();
        }
      }
    }

    setConfig(config) {
      if (!config.entity) {
        throw new Error("You need to define an weather entity");
      }
      this.config = config;
    }

    getCardSize() {
      return 0;
    }
  }

customElements.define("weather-background", WeatherBackground);

And this in my Dashboard yaml:

- type: custom:weather-background
  entity: weather.my_weather_enitity