Palo santo or Holy Wood has been used for thousands of years as an energy cleanser due to it's naturally high resin content. It is known for purifying both people and spaces of negative energies when burned. It has a woody scent with remnants of lemon, pine and mint. To cleanse a person or space simply light the end of the stick extinguish the flame and gently waft the smoke in the air using your hand or a feather. This ritual will not not only remove negativity but also help to attract good fortune.

Clear Quartz is a versatile, powerful crystal. Use it to amplify other stones or alone for pretty much everything. Quartz can be charged with healing affirmations, it can be used to clear negative energy and increase positive energy. One of the most amazing properties of quartz is the ability of its crystals to vibrate at a precise frequencies. These frequencies are so precise that quartz crystals can be used to make extremely accurate time-keeping instruments and equipment that can transmit radio and television signals with precise and stable frequencies.

https://geology.com/minerals/quartz.shtml

Candle meditation works based on how the eyes send signals to the brain for processing. You are only able to see because the eyes keep sending the brain signals that are processed and decoded.

Continued focus on the candlelight means new information is not being passed on. So the information flow to the brain slows down, and all other distractions fade off heightening your focus and awareness on the candle.

Eventually, you become fully absorbed into the flame and attain total relaxation, and you can effectively meditate. Achieving this state allows you to examine and look at the past, present, and future with great clarity.