One of the most historically popular and elegant hat trimmings is feathers.
One of the most popular hat making materials (and one of my favorites), sinamay is a natural straw fabric made from abaca fibers
Sometimes using glue is just something you must do to work with a specific hat making material.
As you expand your millinery skills, it is useful to learn how to do custom dyeing for your clients.
One of the classiest details you can add to a millinery design is a veil. Veils add an air of mystery and romance to any look.
Leather is a durable and flexible material that can be used for a variety of millinery applications, from blocking hat shapes to making flowers and trims.
Garage and estate sales (or car boot sales in the UK) are great local, inexpensive opportunities to source millinery materials.
For creating unusual and elegant trims and effects, one of the most versatile materials you will find is crinoline (commonly known as crin).