Editor's Note: APYs listed in this article are up-to-date as of the time of publication. They may fluctuate (up or down) as the Fed rate changes. CNBC Select will update as changes are made public.

As mercury thermometers are a thing of the past, you no longer have to wait several minutes to read a small red line. Instead, there are now five different types of thermometers — rectal, oral, ...