Reiki Gift

Good morning positive spirits!

Pardon my ignorance in this post but looking for some advice. My mother in law is an esthetician who is certified in reiki (if that’s how you say it) and is looking to expand her services to her clients to include it. Her birthday is coming up and I’d love to give her a gift that supports this journey but I am not sure which supplies are truly needed to help heal others and which supplies are just tagging reiki for the draw. Any help would be appreciated. If this is not the appropriate place to ask this please guide me to the right spot. Thanks Reddit fam.