The dollar can be used once a day. It has to be a dollar’s worth of a product, service or use of a product. For example, A dollar’s worth of a $100 TV would be the life of the TV divided by 100. You would get to enjoy the TV for that amount of time. The product or service is instant and doesn’t require any preparation. It just appears and disappears. Or you could have a TV permanently that is worth one dollar.
Not to brag, but if I made one dollar more per day, I wouldn’t even notice. A dollar ain’t worth a dime anymore.
But in answer to your question, ⅒th of a banana.
If a single dollar doesn’t move the needle for you, that’s great! It reminded me of a book I read where the whole premise revolves around “how much does a single dollar more per day change your life?”
They built an interesting site: dollar street (https://www.gapminder.org/dollar-street).
If all the world lived on a single street, with low income left and high income right - where are you?
You can save it.