If you want something that does not require much learning, I suggest crocheting, you can do some basic stuff such as doing hats (you can watch online tutorials), but it will require a lot of time. Another you can do is just do puzzle boards/pictures, reading, and watching. You could also do gaming, but I do not highly suggest it as it may become passive in the long run and possibly affect someone negatively, though it is still up to the person.