ReP-A-R-E (RePurposing, Alterations, Repairs and Embellishments) #3 is a super simple one.
Sometimes when I am out walking I prefer a hat to a hood or umbrella. However the hat sometimes blows off in the wind.
I pulled the lining away from the hat and then used a narrow zigzag to attach the elastic cord to the lining.
I mostly wear it with the cord tucked under my hair, but if it gets more blustery I can tuck the cord under my chin for extra security.