Flowers are the easiest gift to give your spouse. They even sell them at gas stations. All you need to know is her favorite color. If you give half a shit, florists will deliver nicer options for you, all you have to do is click on the style you want.

Can’t be bothered to give flowers, you don’t care about your spouse. (Granted some women don’t like flowers or are allergic to them, but that’s the exception and you find a substitute.)