In the kitchen area of the safehouse are storage containers for food.
Additionally there is a water fountain for use with Realistic Needs and Diseases
After buying the upgrade for the back room, a set of crates will appear that will allow you to set up and switch between a Follower's Room and a Children's Bedroom. Also the possibility to set up the Patio area. Once the upgrade is bought from Bits and Pieces in Solitude, switching between the two can be done as often as you like and takes about two in-game hours.