Smart stacks are a great way to use multiple widgets but not take up too much room on your Home Screen. You can drag different stacks of the same size over one another and then let iOS show you the information it thinks you need when you need it or you can swipe up and down on a Smart Stack widget to change the active one.
To do this you simple create two widgets of your choice (of the same size) then tap and drag one of them onto the other. ios then creates a Smart Stack of these two widgets. You can then long press and ‘edit stack’ to change options.
You’ll want to make sure smart rotate is enabled to let iOS show you the info when it thinks you need it.