DIY Baby Shower things

I'm throwing a "Diaper Bash" for my boss whose wife is due in December. Everyone  will be brining diapers as their gifts. Decided to make a few things for the activities. The first is "Late Night Diapers" where people an write funny things on diapers to be used for the late night Changes. The other pic is the board where people can pick the date they think the baby will be born. What do you think?