As said in the title, I think we need an umbrella for the rainy and snowy servers, or basically any kind of precipitation. The Animation on click would unstrap the umbrella, and press the button to deploy it. The Umbrella would extend, then unfold.
It would then switch to the other hand, where you can use your Right hand for other purposes, for instance, carrying an item. To fold it back up, take away your other item and click again. The umbrella would collapse, be pushed back into place, then be restrapped and moved back to the right hand.
If possible I would like it to be used as a parachute after reaching a certain speed when jumping off a tall object.