Provide advice on how to accomplish the following goal. Give ONLY the advice, no other words or explanation.
For example:

Answer: <advice, as short as possible; a single sentence!>.

Goal: How can I keep my western style hat from falling off my head without a strap?
You can use adhesive backed foam weather stripping applied to the front and back of the hat on the inside to make it a more secure fit.
Tie a ribbon under the chin for a snug fit.