Michelle recommends using Brush Guards to help maintain your brush's shape during the drying process, and I have to admit I love these things. You can buy them online, but I've found them in several Walmart stores (in the Huntington area, they're only at the South Point Walmart). You get a few different sizes that fit everything to a kabuki brush to lip brushes. Don't cut them, though, because they're woven and will unravel. I learned that the hard way. They help keep debris off the brushes and I can't imagine traveling without them. I did stop using them in my brush washing method because it takes forever for my brushes to dry with them on. My big Tarte brush takes almost a week to fully dry with a Brush Guard on which I find rather ridiculous.
I have since changed my makeup brush washing ways. I only use Michelle's olive oil method on a select few brushes, and use an anti-bacterial soap/moisturizing shampoo mix on the rest. To dry them, I elevate one side of a cookie cooling rack and cover it with a towel. I then lay the brushes so the handles are on the elevated sides so that water doesn't sit in the metal parts loosening the glue on the bristles. I like my new method and it's getting my brushes good and clean.
How do you wash your brushes?