I have a few blends up my sleeve that I love, but the one I'm most proud of is my Oatmeal Milk & Honey (OMH) blend. I had searched for the longest time for an OMH that smelled like it's name instead of smelling like almond/cherry like so many of them seem to do, and I finally found one at Oregon Trails soaps that didn't have any almond/cherry notes, but I felt it needed a bit more of a milky note to be perfect. Enter Daystar's Milk Sugar Kisses, (a dupe of Matin Calin) which is a lovely, comforting, pure, sweet milky scent. It was a match made in Heaven. I mix them @ 5 parts Milk Sugar Kisses to 2 parts OMH, and it's the perfect OMH to my nose. It soaps great, too. No A, but it does discolor to a light beige color.
Another favorite blend of mine is what I call my Blood Orange blend: 12 parts of any good & strong 'straight-up' orange FO to 2 parts WSP's Midnight Pomegranate FO. I haven't ever soaped with this one yet, but it makes a great perfume spray.
If you like the smell of Ivory soap, mix 1 part True Rose from SweetCakes to 2 part Pureed Grapes (i.e., Pure Grace) from TheScentWorks.
My Tropical Paradise blend: 3 parts SweetCakes Coconut FO /3 parts Peak's Passionfruit Guava /1.5 parts any good & strong 'straight-up' orange FO.
I don't have a name for this blend yet, but it smells wonderful to me, especially in salt bars: 6 parts MMS Jasmine FO/3 parts any good & strong 'straight-up' orange FO/2 parts Daystar's Salty Sailor FO.
I also like to do what Dixiedragon does, i.e., splitting a batch of soap in 2 and scenting each portion with a different FO. Three of my favorite soaps to make this way are these: Peak's BRV/Daystar's Paradise; Daystar's Milk Sugar Kisses/TheScentWorks Tupelo Honey; and MMS's Green Tea/TheScentWorks Black Kemun Iced Tea.