Your kids may be too old for this...but we bought DD a playhouse as her adoption present. It's 10x12 and looks like our house (same colors). Basically it's wood shed that is changed a bit to be a playhouse (i.e. child sized door, flowerboxes outside windows, etc.). DH finished the inside (drywall, paint, floors, etc) and Santa left a kitchen set and table and chairs for her. She and the neighborhood kids love it! It's really adorable, but we joke about how we are going to have to lock it up in about 10 years when DD and the neighbors hit the teen years!