Stay in place and eating

What Kriss said. Also:

If boredom is part of the problem, this is a good time to revive an old hobby, or start a new one. Particularly good are things that require clean hands (needlework, sketching, playing a musical instrument, etc.) or create dirty ones (painting, carpentry, gardening, etc.).

You may lack supplies for many things, but if you're willing to deal with not being able to pick your very favorite, sketching in particular is something most people can do, and most of us have paper and a pencil or pen. There are many instructional videos on YouTube and elsewhere. One need not produce a beautiful end product for this to be rewarding: Trying to draw something is a very interesting way to see that thing - even a mundane, everyday thing - in a new way.

Collage is another one, messy and fun, and many of us have paper or old magazines/junk mail, and glue. Pretend it's elementary school again, and just play.

If anxiety/stress is part of the problem, consider beginning a meditation practice or using a guided imagery app or video, or something of that nature. Some people think that being "bad at meditation" (can't keep focused, etc.) is a reason not to do this. In actuality, trying to do it is a way to refine one's skills for concentration and focus. (It seems funny to me when people don't want to do stretching/yoga because they're not flexible enough, when getting more flexible is the main reason to do them: Those folks, with some patience, would get the most benefit. Meditation is kind of similar, on the focus/concentration front.) There's also a common myth that meditation is all about religion, or Eastern religions specifically. In fact, most religious traditions include meditation practices in their history (sometimes they call it a different name), and there are 100% secular versions as well.

Best wishes!