I love messing about with all sort of essential oils to create things that smell pretty. Try combining a few until you get something that you like.
Rose and geranium (classic floral), Vanilla and orange (orange creamsicle), Lavender and melissa (relaxing floral), gardenia and coconut (exotic floral), ylang ylang and sandalwood (sensual and woody) ...
You can even mix three at the same time to get some really interesting combinations. I love vanilla, gardenia and coconut. Amber is also a good base note to play other scents against.
Mints do tend to go odd fairly quickly. And yes, blend your EOs in a carrier oil. Almond oil works well but has a subtle fragrance...
"Success is not final, failure is not fatal: it is the courage to continue that counts."-Winston Churchill
"Keep Calm and Carry On"-British Wartime Poster