To help me remember to take all my vitamins and supplements, first thing in the morning I line them all up on the side of my stove. The Penny is a reminder for the Probiotic which is stored in the refrigerator. The nickels are to remind me to take my GI Replenishment Powder. To get in all 4 scoops, instead I take a heaping scoop before each meal. Then I move the coins to the bottom of the mat so I know i took them. Hope this helps someone!