what is the perfect box/mailer/whatever... to ship a tie???
If you want to ship it pretty cheaply, and very easily, just get a small USPS Priority flat rate box. They are made to ship VHS tapes, but a couple of ties fit perfectly. Around $5
Click and Ship (usps.com) gets you a discounted rate, and free delivery confirmation.
If you want to ship it very cheaply, just buy a padded envelope and ship it USPS First Class mail. It shouldn't be more than $2.