Sometimes I end phone conversations with "I love you" just for the hell of it.
i do this! it's pretty satisfying.
otherwise, i go to the park/river, go to shows, read, listen to my records on the floor (this usually takes hours away from me), bake (and then bring the goods into work the next day), paint, write, take photos, or go online and learn something new (usually a language) with no intention of remembering it, but to merely kill time (and not myself).