Might I suggest a helmet.

As far as whacks to the can goes that is a dandy. Gonna leave a mark you can show the grand kids. Mighta been that time you got hit with a baseball. Or might be the time you were chased by a Tyrannosaurus Rex. Grand kids all think grandpa rode a dinosaur so you might as well pull their leg a bit.

Be sure to follow the advice of the neurologist and docs. Take it easy for a time. And watch out for baseballs. Might want to wear a helmet. I lean toward a broad-brimmed lineman's helmet, the brim helps with the Florida sun, but you might go with a King Leonadas for meetings and formal affairs:

http://www.reelcollectibles.co.nz/images/300/300_leonidas_helmet_neca.jpg

Or, for all round protection, for poker, and when your feeling a bit withdrawn:

http://www.walyou.com/blog/2009/01/02/limited-edition-iron-man-helmet-replica/

When you're feeling mean. Great for firing employees and negotiating with vendors:

http://nexus404.com/Blog/2008/03/03/conc...e-modern-vader/