21.   In your carry-on, stow an extra pair of eyeglasses or contacts.

22.   Instead of millions, Graboski scored a couple of extra pairs of Keds when everybody else on the team wore Converse.

23.   Instead of millions, he got a couple extra pairs of Keds when everybody else wore Converse canvas high tops.

24.   It started over an extra pair of socks.

25.   Juneau obliged friends back home and stuffed a few extra pairs in her luggage.

26.   Now is your chance to get your ears pierced and get an extra pair to take home, too.

27.   Now I worry only about the absolute essentials, like prescription medicines and an extra pair of contact lenses.

28.   Now is your chance to have your ears pierced and get an extra pair to take home, too.

29.   The aide will be an extra pair of eyes for Ms. Diaz-DeJesus, who has lately been spending more time with Maria than she can spare.

30.   The gentleman in question is clearly going to need at least one extra pair of hands for his resawing.