What are some hidden elements that are related to weather measurement tools in Little Alchemy 2?

In Little Alchemy 2, there are several elements related to weather measurement tools that you can create. Here are the steps to unlock some of these hidden elements:

1. Thermometer
- Step 1: Combine Air and Water to create Rain.
- Step 2: Combine Rain and Earth to create Plant.
- Step 3: Combine Plant and Fire to create Tobacco.
- Step 4: Combine Tobacco and Glass to create Thermometer.

2. Barometer
- Step 1: Combine Air and Pressure to create Wind.
- Step 2: Combine Wind and Glass to create Barometer.

3. Anemometer
- Step 1: Combine Air and Pressure to create Wind.
- Step 2: Combine Wind and Metal to create Anemometer.

4. Rain Gauge
- Step 1: Combine Air and Water to create Rain.
- Step 2: Combine Rain and Glass to create Rain Gauge.

5. Weather Vane
- Step 1: Combine Air and Pressure to create Wind.
- Step 2: Combine Wind and Metal to create Weather Vane.

6. Hygrometer
- Step 1: Combine Air and Water to create Rain.
- Step 2: Combine Rain and Glass to create Hygrometer.

7. Weather Balloon
- Step 1: Combine Air and Pressure to create Wind.
- Step 2: Combine Wind and Fabric to create Weather Balloon.

8. Weather Station
- Step 1: Combine Thermometer and Barometer to create Weather Station.

9. Weather Map
- Step 1: Combine Weather Station and Paper to create Weather Map.

10. Weather Forecast
- Step 1: Combine Weather Map and Time to create Weather Forecast.

These combinations will help you unlock various weather measurement tools and related elements in Little Alchemy 2. Remember to experiment with different combinations to discover even more hidden elements!