We are announcing at xmas too!! I am putting a ribbon around my stomach with a big gift tag attached that says"do not open till July 2014!!" We are also gonna put a shirt on my lil boy that says big bro!!
I gave my inlaws a BIG card with my first sonogram picture blown up to an 8 x10 and it said merry Christmas granpa and grandma lol
We made an ornament with our other boys thumbprints as reindeer and then added their birth years. Then I added an extra small print with next years date. Hopefully, the grandparents will get it.
We are doing the same, plan to wrap a baby onesie and hat and give it to my daughter at home then do the same for my in-laws at their house