you can clone using just water using a bubble cloner.....i've also heard something like boiled willow bark water can be used too....but im not 100% sure.
you can clone with nothing but medium , water and a cutting. But a lot of the times it doesnt work or itll take forever. you need a 10 dollar rooter gel.
I used Floral Foam to clone my plants, I put them into the floral foam, and then popped them into soil and watered them with nutrients at half strength. I also covered the top of the area they're in with Saran Wrap to keep heat and humidity up. They all survived.