I will be kicking off my new “line” of EO scented soaps soon . I ordered lavender 40/42, lavandin, pettigrain, cinnamon (leaf), litsea, palmarosa and Ylang Ylang. I already have patchouli, cedar (Virginian?, I think), peppermint, tea tree, eucalyptus, rosemary, lemongrass and possibly small amounts of a few others. The plan right now is to compare the lavender and lavandin on their own and in an EO blend. What’s are good base notes to mix with lavender or lavandin? I like patchouli but realize some don’t. I also like the Revive blend from EOCalc, but with tea tree, eucalyptus and peppermint in the mix it may not be the best for testing the longevity of the lavender and lavandin.