Buy bone-like doggy chews - take it for longer walks - provide it with a playmate - take it to obedience classes.
As for the chair and rug - you can use Gaffer Tape on the chair arm to fix on a piece of furniture foam - it won't look very good though - you might just have to live with the damage to the rug - or replace it.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix chairs.