Slot shield; Price 3,155 gp Weight 5 lbs.
This +1 buckler is made of heavy steel. It has magically hidden plates that expand or shrink at a command word (a free action). You can cause the shield to become a light steel shield or a heavy steel shield on command, or shrink back to a buckler.
Craft Magic Arms and Armor, shrink item. Cost 1577 gp and 5 sp
I’m sure someone has come up with this before, but I wanted to do my own version. Enjoy the flexibility this item allows!