Have you tried playing Warhammer? Eat up that 8 mil real fast ;)
In seriousness though, I think changing that "no real hobbies" statement is the way to go. Find something not work you enjoy doing, or if it turns out work is really what you enjoy, keep working! Don't let the money burn a hole in your pocket - you don't need to change anything at all.
Another option is do work you think matters or would be fun if you never had to think "but I couldn't support my family doing that.." Working at a bike shop is that for me. Charity work, maybe getting involved with your kid's education boards, etc., something out there must make you tick that you couldn't afford to do before.
In seriousness though, I think changing that "no real hobbies" statement is the way to go. Find something not work you enjoy doing, or if it turns out work is really what you enjoy, keep working! Don't let the money burn a hole in your pocket - you don't need to change anything at all.
Another option is do work you think matters or would be fun if you never had to think "but I couldn't support my family doing that.." Working at a bike shop is that for me. Charity work, maybe getting involved with your kid's education boards, etc., something out there must make you tick that you couldn't afford to do before.