The individual hot and cold taps on many vintage bathroom sinks make for hazardous face washing. The water's either burning hot or freezing cold. DEA Bathroom Machineries
in Murphys, California, solves the old-fashioned-faucet problem with a bridge adapter that spans the distance between the two taps and mixes the water to your desired temperature. Based on an original 1908 design, the bridge faucet comes in various lengths to fit a number of sink styles and sizes. About $330.