Last month he started laughing.
Just before he turned five months, we closed on our house and moved in. This is what we bought to keep him entertained while we packed. He loves to jump around and since he was crawling out of his bouncer, swing, and Bumbo, we needed something to keep him entertained.
We went to my office's Christmas party, which put me in the Christmas spirit. I pulled out this sleeper for him to wear that night.