I absolutely understand the frustration of not having a CHOICE about whether or not you’re working right now. If you’d taken this time away from work intentionally because you needed a break, you wanted to work on some other project, or to take a class, that would feel totally different. But this choice was kind of made for you, so it’s no wonder it’s getting under your skin a bit.
Have you considered looking into virtual/remote work of some kind? Even part-time or freelance work might help you feel like you’re gaining skills and experience in a proactive way. And it would give you a (paid!) project to devote part of each day to. Just an idea!