You can get the brass scrwes from home depot, I forget what sizes they are but bring your old screws so you can make sure you get the right ones. Make sure you sand the switch bolt down a little where it is flat, that way it makes a better more consistent connection. If you want a nice case but don't worry a lot about how big it is go with a "cigar caddy" from provape or ebay it will hold the mini or the standard or both. Don't know about switch magnets, I have yet to have an issue with the springs in any of my zens.