Alternatives to sitting meditation? I'm not exactly a Buddhist, just a meditator.

However, I was wondering if there are alternatives to just sitting and watching the breath? Especially, are there things I can practice throughout the day to accomplish the same effect?

The fact is I, and many other people, will not have time to meditate consistently and see its benefits. I appreciate your responses.
The Buddha taught many forms of mindfulness and meditation.  I encourage you to check out the Satipatthana Sutta and Ven. Analayo's absolutely indispensable commentary on it.  Teachers like Goenka are also worth a look.  That being said, nothing can replace seated meditation; there is nothing available that has the same effect on consciousness.  You simply cannot calm and slow the mind to the same degree with any other practice.  Concentration is necessarily diffused when mindfulness is carried into activity.  With that limitation, mindfulness can only take you so far.  

All teachings on mindfulness culminate in seated meditation.  In fact, awareness of the breath is one of the deepest mindfulness practices available.  While other mindfulness practices are a great supplement to your time on the cushion, they cannot replace it.