Training and security company Covered 6 makes a portable armor shield called the Savior PDS (personal defense shield.) The Savior folds to resemble a briefcase or tote bag.
When folded it can even be used to carry your pistol or other item(s). When unfolded, the Savior forms a torso-length ballistic shield capable of stopping handgun and shotgun rounds. The Covered 6 Savior PDS weighs about five pounds.
This type of shield could be used in a variety of situations from people needing additional protection outside of their home due to special risks, home owners to keep at the bedside or even office workers who keep one at their desk due to concerns about spree killers or other specific threats.
The Savior reminds me of the rig that Eric S. set up at ITS Tactical with old ballistic vests.