Every artist needs one key tool to do their job.

In a special edition of Variety’s For the Love of the Craft presented by Netflix, senior artisans editor Jazz Tangcay caught up with the artisans behind some of the streamer’s biggest shows to learn about the one essential they need to do their work.

“Stranger Things” makeup department head Eryn Kruger Mekash revealed brushes were a must-have: “I could not do my job without would be a simple brush, whether it be an airbrush or just a handheld brush.”

It’s all about simplicity, too, for “Wednesday’s” co-music supervisor Jen Malone. Her go-to is a notebook and an automatic pencil. “I can’t live without my very special pad.” However, it’s not just any notepad. “It has to be five by seven; cannot be eight by 10. It has to be hard cover, it has to have spirals and it has to only be with one of these pencils. That’s it. Nothing else.”

What she writes in her notepad remains “top secret” though. Malone’s colleague and co-music supervisor on the show, Nicole Weisberg simply needs “sparkling water every hour.”