Liam wants to be a baby all the time. This includes sleeping in Madeline's crib, wearing diapers, being rocked, and rolling around on the floor making baby noises.
I am thinking he is going to grow out of this any day.
Anything and EVERYTHING can and will be used as a costume.
Some costumes that have yet to be caught on camera are:
Peter Parker/Superman/Power Ranger/Soldier Combo (that one is an interesting one, I tell ya!)
I do not cage my children.
They do this voluntarily!! I swear!!