I use both pre-made and make my own, especially for my deities. It’s definitely a topic that has been explored as @Artemisia mentioned. I think we have some other information too:
→ Fresh Incense & Rope Incense
→ Kyphi-Ancient Egyptian Incense-Easy to Make
→ Incense, oils and cats
These may also be referenced within the challenge she linked too. There is also recipes on the main site as well:
→ Spells8 Incense Search Results you may need to be logged into Spells8 to see the results or you can login and type incense in the search bar of the site 