Everyday needs.

Why you always use the toothpaste and soap to end before buying more? Always the same thing.. And never remember to buy them. But when do remember, you buy few piece of them so they'll last long and you don't have to buy them soon because you wouldn't remember and now when you have lot's of them you'll have weeks time to remember to buy more before they'll empty again. And then you realize that you again used the last drop of them without remembering to buy more.