There are always a few faint comets visible somewhere in the night sky if you have access to decent binoculars or a small telescope.  A great database with finder charts is available at in-the-sky.org. The next bright comet could be Comet Tsuchinshan-ATLAS in the fall of 2024, but we won't know how bright it can become until it makes its close approach to the sun and starts sublimating impressively, or not.