Jobs
You get them randomly from helping mafia members (/facebook friends) with anything really. e.g. wars, gifting etc.
You'll get barber shop items by doing Capo jobs.
All Lotto Items are Daily Chance Drops~
Cards are an item that you get from doing jobs. You can't control which items you get. Try asking your mafia if they have the one you are missing.
it will come to you randomly when doing the jobs for that tier if you cant manage to get it then add it to your wishlist, maybe a member of your mafia can help
Soldier Tier Jobs. I think it says. XD
your Mafia Wars whenever you are in the fight mode. you can see your status and your Mafia Wars ID when you attack anyone.
attack them
it will show on your message board for Mafia Wars on the home page.
you will have to find all the necessary items needed to vault it. these collection items can only be achieved by winning the lotto tickets.
well, there's always the wishlist function, which is the three items one sees when one clicks on one's mafia's profile. Also, some items, like the Cuban M16A1, are never not wanted. Failing that, you could message them...