Yes Eagle in Center, maybe a Block in each corner that would represent 4 of his Favorite merit Badges. Or you could do Blocks around the entire Quilt -Each one for a Merit Badge... or The Border Blocks could be made in the number of merit badges he completed or Appliques showing what he did for his Eagle Project.. Lots of Ideas there..
and you could just use the Boy Scout Colors on the Back ....
My Oldest Son made Eagle Scout... its a nice Accomplishment and Order of the Arrow, He also went on an International Camp out on Pelee Island Canada out in Lake Erie... and Hiking in the Adirondack Mountains in NY State. and White Water Rafting down in PA.. So Scouting is a lot of Fun, I was a Registered Adult Scouter for over 13 yrs..