I had an email asking for information and decided to answer here. The trims I use tend to be ones I've had for years. Sometimes I paint them with acrylic paints. If I buy locally, it's at Joanne's or Fabric Depot. Online I use www.joggles.com
Don't overlook thrift and antique shops for unusual things but remember they might not be there if you don't get them when you see them.
I hope that helps.