Go to walmart, buy a portable sewing kit. Put your pin in that along with your razors and put your plunger somewhere else in your luggage. Worked for "a friend" internationally
Two options that I don't believe have been mentioned yet.....
1) Checked luggage - You can put nearly anything and everything into checked luggage. I would have to assume it would be much easier to get these things to your destination this way.
2) Drive - Sucks if its a far distance, but I guess you gotta do what you gotta do.