Amita looked at the calendar and became extremely nervous then wrote: "So, what do you get for the photographer who seems to have everything?"
Since he likes outdoor photography, I suggest the Kirk window mount: http://www.kirkphoto.com/supports.html or the Bogen 3421 Gimbal head: http://www.bhphotovideo.com/bnh/controller/home?O=productlist&A=details&Q=&sku=126663&is=REG or the Pentax focusing rail: http://www.photo.net/ezshop/product?product_id=838 They're well made and brand independent (you can use them too). You could also spring for Wimberly head. Tom Reese
