Perlite, Perhaps?

https://www.plantsforallseasons.co.uk/blogs/propagation-guides/how-to-propagate-houseplants-in-perlite

If you don’t want to follow the link, here’s the essence of the process:

  1. Choose a healthy stem: Select a 4-6 inch stem with leaves.
  2. Prepare the cutting: Cut below a node, remove lower leaves.
  3. Prepare the perlite: Fill a container with moistened perlite.
  4. Plant the cutting: Make a hole and insert the stem, covering a node.
  5. Provide the right environment: Bright, warm, indirect light; cover for humidity.
  6. Wait for roots: Expect growth in 2-4 weeks.
  7. Transplant the cutting: Once roots are an inch long, move to soil.
  8. Care for the new plant: Water and provide indirect light.