I found various yellow shirts at the second hand stores (it is almost impossible to find yellow in the winter! we will shop for next year's yellow day in the spring) and made some iron on transfers for mine and the little's shirts. (Designs inspired by these.) It's a work day for my David, so I found him a dress shirt and did not ruin it with a t-shirt transfer.
I'm not sure if we'll get a family shot later or not, but two of my littles were ready to represent for the blog.