Book club? Community colleges frequently have adult enrichment classes spanning a wide range of topic. The classes may meet only once as a seminar or several times or weekly for a term. Puzzles like sudoku, crosswords, word jumbles,etc. are good for keeping your brain active and limber. So are foreign languages and music. Or you could do internet research to learn about something new or something you don't understand well or just to learn more about something that interests you. Finding ways to use your brain will benefit you. You won't be as bored, and you'll be setting a good example for your son. I mention the second part only because you seem worried that your lack of activity is having a negative influence on your son. You can show him that even though you have MS, you can still do things and that learning is a lifelong endeavor, not just something you do in school. Your son will see you helping yourself dig your way out of the hole of depression.

Start small, do what you can and keep at it. You don't have to be a superstar.

Maybe you and your son can learn about something together. Select a topic and research it together. Or have a contest to see who can learn the most about it. I understand where you're coming from. I'm in school and just finished the summer term. I have 4 weeks until the fall term, don't have a job, and don't know what to do with myself. Your post has challenged me to practice what I preach!