I know two of those are hard to do without a shoulder, but are easier when you're healing than climbing/lifting. Plus I guarantee you know someone you're close to that could teach you more about biking than you'd ever want to know.

Cooking sometimes is tough if it's just for one, but when I've been on my own I've tried some things that take more time than I'd normally be able to commit if my family was around. Like making a pastrami.

My wife and kids have been out of town for two weeks and will be gone another two. These four things have stopped me from going insane. Plus they're hobbies you can take with you anywhere.