As someone who is struggling with chronic depression, I know exactly how you feel. You're right-cats seem to know when we're ill (and depression is a form of illness.) At the *very* least, their presence means you have somebody to take care of, to get out of bed for.
I think it was just some balls, maybe a mouse as well.
One of my cats really enjoys their play cube-she likes to take naps in it and also bat it around the room. Do you think your cat would enjoy something like that?
It sounds like he's going through the terrible twos. While each cat is individual, they do tend to grow more independent, as well as naughty :ohwell:
PLEASE try to prevent your mom from getting him declawed. Educate her on how declawing adversely affects cats. My mom had our cats declawed...