Clean Piano Keys
Gently clean piano or keyboard keys without damaging them by mixing half a cup of white vinegar with two cups of water and then lightly dampening a microfiber cloth with the solution. Wring out the cloth ad gently wipe each key. Use another dry cloth to dry all of the key and let the keys completely dry uncovered for at least one full day.
Test Gardening Soil
Gardening is one of the most relaxing hobbies you can try. However, you need to make sure the soil is not too alkaline or acidic. You can easily test this by taking a bit of the soil, placing it in a container and then pouring half a cup of white vinegar into it. If the soil bubbles or fizzes, it is too alkaline. To check for acidity, do the same with half a cup of baking soda and half a cup of water. If the soil fizzes, it is too acidic.