Cotton Bacon is pretty popular and is on Amazon.

https://www.amazon.com/Cotton-Bacon-Organic-Muscle-Project/dp/B078WQQBFS/ref=sr_1_4_a_it?ie=UTF8&qid=1548747681&sr=8-4&keywords=vape+cotton

There is a lot of different type of coils to pick though. Can buy an assortment kit to try out a few and see which ones you like.

Just an example:

https://www.amazon.com/Prebuilt-Cotton-Kanthal-Material-Household/dp/B077N26ZKJ/ref=sr_1_1?s=hi&ie=UTF8&qid=1548748085&sr=1-1&keywords=vape%2Bcoil&th=1