Most people know this trick but cucumbers help blood vessels to constrict which result in less puffy or dark circled eyes. Lean your head back, place a cucumber on each closed eye, and relax for five to ten minutes:)
Have a headache/migraine? Submerge your feet and hands in hot/warm water and put a bag of frozen peas at the base of your skull. The heat on your extremities pulls the blood from your head relieving some/all of your headache.