Okay, I just went all crazy telling you all the things you need to have for a 3-1/2 YEAR old! Geez. I should start reading better. I would think for a 3-1/2 month old, enough formula/breast milk, diapers (bring your own ZipLock baggies), binky, blankets, extra clothes, baby wipes and a couple of his favorite toys to occupy him for when things get boring. Luckily at that age, it doesn't take too much.
at 1:27 PM on Apr. 20, 2011