Cleansing with water
One of the easiest ways to cleanse anything water-safe is by immersing it in water. Many practitioners prefer using clean running water from a natural source, but you can also add a few pinches of sea salt to a glass of water and use that. Seawater can be used to clean your altar after a magical working, while lake water is very useful for cleansing tools before a ritual. Never immerse water-soluble crystals (like selenite or any ite ending crystal). If you have water-attuned tools or crystals, immersing them in running water is also a great way to charge them.
Cleansing with salt 
Salt is a useful cleansing tool. You can place items on top of it, and allow it to sit overnight (or, if you prefer, until the next moon phase). While burying crystals in salt is a popular method of cleansing them, it should be avoided in crystals that are very soft or contain a lot of moisture in their matrix — the salt may damage them.
Cleansing with soap 
It is best to be careful with using soap, as it may damage some tools. As a rule, items that can be immersed in saltwater can be cleansed with mild soap and plenty of rinsing. Use a good spiritual cleansing bar, like Florida water soap, and spot test a small area before working on the whole tool.
Cleansing with herbs 
Herbs are another popular method especially if you are unable to clean your items in water or salt. You can do this by burning the herbs either alone or on a charcoal disc, and pass your items through the smoke. The smoke will remove negative and/or stagnant energy with it. If you cannot burn the herbs, you can also place them in a dish and bury your tools in them. Popular cleansing herbs are white sage, lavender, lemon peel, rosemary, and peppermint.
Cleansing and charging under the sun and moon
Sun rays are an excellent way to cleanse and charge your tools. Find a place outside where they will not be disturbed or set them in front of a sunny window before noon. Remove them before the moon rises. As a word of caution, it is best not to place colorful varieties of quartz ( amethyst, rose quartz, or smoky quartz) in the sun, as they may fade.
The moon’s phases offer another way to cleanse and charge your tools. The phase from the full to new moon is great for removing or decreasing, so placing tools under the waning moon can get rid of old energy and cleanse things. The phase from new to full is for increasing, so it is excellent for charging items. If you can, place them under the moonlight and let them be undisturbed from one full moon to the next.
Cleansing with sound
Bells, bowls, chimes, rattles, and other instruments can also move old energy. Place the object on your altar, or another space where you will have room to work around it. Then, simply use your instrument to clear away the stagnant vibrations with sound. Avoid placing crystals inside of a singing bowl, as the ringing frequency may damage them.