A wide variety of woods can be used for the flyer head.
Here's a partial list of my stash, if you don't see your favorite, ask!
Except as noted, the upcharge for each of these is $50.
Bamboo
Bloodwood
Bocote
Box elder
Bubinga
Butternut
Curly cherry
Cocobolo
Coolibah burl
Ebony ($100)
Goncalo Alves (aka tigerwood)
Grenadillo
Imbuya
Iroko
Kauri (30,000+ years old)
Kingwood ($75)
Curly Koa ($75)
Lacewood
African mahogany
Olivewood ($75)
Birdseye maple
Curly maple
Marblewood
Padauk
Pink ivory ($75)
Purpleheart
Redheart
Rosewood
Sapele
Quilted sapele ($75)
She-oak
Snakewood ($100)
Spalted tamarind
Tulipwood
Curly Walnut
Wenge
Yellowheart
Zebrawood
Zircote ($75)