Your tongue over night collects all sorts of nasty things (ama in Ayurveda). Toxins, bad odors and bacteria that can hurt your digestive track. Your tooth brush really doesn't help, it just pushes them back deeper into the tongue. Gently scraping your tongue every morning 10 to 12 times with a tongue scrapper will improve your health and your taste buds.
$7
Neti Pots
Lots of research has documented the value of a daily saline rinse of the sinuses for alergy treatment and cold/flu relief. Add 1/2 tsp of salt to this small pot with luke-warm water and rinse each nostril in the morning. You will breath better, sleep better and improve your sense of smell.