Bigger closet

I’m looking for some ideas where to put stuff.So we live in 2 bed 2 bath apartment.LO is one year old and sleeping with us in his crib. so other room is for storage.Now that I’m pregnant again I need to move him into other room but I don’t have space for stuff that are there.Like dose big storage boxes.I was looking into closets but can not see big enough for those plastic boxes (his clothes is inside that he doesn’t wear anymore l).

Any good pic of closets or advices what to do are more that welcome