Cacti:

https://en.wikipedia.org/wiki/Cactus

Cleaning gold:

https://www.jewelersmutual.com/the-jewelry-box/how-to-clean-gold-jewelry-the-right-way

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Cochineal:

https://botanicalcolors.com/confused-about-cochineal-natural-dyes-ask-kathy/

https://www.thebottegaprojects.com/materials-and-recipes/cochineal-pigment

Meditation:

https://www.healthline.com/health/mental-health/types-of-meditation#spiritual-meditation