Congratulations, It's Long Grain
Check out these birth announcements from Japan (courtesy of Daddytypes). Junior's picture is imprinted on a bag of rice, which is filled with just enough rice to match the little bundles's birthweight.
Just a thought: Twenty years later, you get a forklift at your door with a wedding announcement scaled to the happy couples' combined tonnage. Whew. That's allota rice.