Just because a good friend lives halfway across the country doesn't mean your relationship has to suffer. With a little effort and thought, you can keep treasured friendships tight. Some ideas:

Don't wait until birthdays roll around. Anytime you come across something that your friend might like or that might make her laugh, send it! Some ideas: a DVD of a sitcom you watched as teenagers, a photo of the two of you, a cool book, a box of Pepperidge Farm® cookies.

You don't have to be in the same room to crack each other up. Forward jokes or funny articles from the web. Email the lyrics to a terrible song your friend used to love. Dig up an old photo of her with an embarrassing haircut and pop it into an envelope.

If your friend lives far away and traveling to her town is inconvenient, pick a location in the middle for a reunion (or a city that would be fun for both of you—like Las Vegas, Chicago, Miami). Plus, the chance to spend a few days exploring a new place together will create great memories for years to come.