Very weirdly, the keyboard on my laptop where several of the keys in the top-left haven't been working for months seems to have at least somewhat come back to life by itself.

The e key is working about 25% of the time but that's about 25% more than usual. (I've set up the F9 key as a slightly awkward workaround.) The 1 key is working. Even the q and TAB keys are working more often than not.

it's a bit of a miracle. The e key's return seems to have been very short-lived but the rest seem back.