Dino....I am a HOW of sorts. I am not a member of the organization, but flown out of Bagram Afghanistan (in support of the 10th Mountain Division and Operation Enduring Freedom) on an Air Force Medi-vac (2004) and medically retired from the Army (2005), rated at 90% disabled. At the same time, I was also cut loose from my civilian job with Global War On Terrorism (GWOT), because part of the criteria was being retained by the Army. I do utilize some of my benefits, but relinquish others, like Handy Cap Parking (despite being over qualified) for those I feel need it more, to include Veterans of all ages and Senior Citizens who have done their time in our great country.
As for contributions, I am also a long time Life Member of Trout Unlimited, having served as Vice President, Treasurer and Banquet Chair for annual fund raisers, prior to my deployment. I mention this as it would benefit you to contact as many manufactures of equipment, be it angling, clothing, kayaking or whatever and to do it as soon as possible. Also professional guides and speakers. I say as soon as possible because from experience, most have done what they can for 2011, but can guarantee you, are already getting geared up for the new year, only giving donations to those that ask, who have a worthy cause and as their supplies last.
It also probably goes without saying, but again and from experience, the sooner and more requests you submit, the greater your success. Get the permission you need from HOW to use their logo as well as design your own. Get cards and letterhead printed (possibly donated) and stay ahead of others with requests...Good Luck Bro. :icon_salut: (wrong hand, but still salute your efforts)