For cleansing your space and your crystals 

Californian white sage lr Palo Santo 

Light a flame to one end of the wand/stick

Open window in the space you want to cleanse 

Allow to burn

Blow out the flame

Gently push sage smoke into the room or over your crystals 

Stub or smudge the sage stick out onto a plate or suitable dish to stop the burning and save the rest of the sage wand for another day 

Alternatively you can purchase one of my wood burners for hands free lighting !