Maybe the local radio shack would have something.
See if there is one old guy working there. The kids dont know nuthin except how to put time on your cell phone.
Instead of called a reducer it may be called a transformer or a Step-down Transformer. They may have something online... or Radio Shack also has a Giant Catalog that has stuff not carried in the store. It is all Electronic Gizmo stuff.
In the meantime, find a 6V motorcycle battery or riding lawnmower battery and play with your wiring setup.
