One of the great things about meditation is that it can be done just about anywhere and can accommodate your scheduling challenges

Breath by Breath
Find a comfortable “seat” (either sitting or lying down) with your eyes either closed or partway open with a very soft focus. Begin to bring your awareness to your breath. Simply notice yourself inhaling and exhaling. Feel the sensation of the belly swelling as you breathe in. Feel the deep sense of release as you breathe out. After a few breaths of simply feeling your breath, notice when you breathe in and when you breathe out – you can even say to yourself “breathing in, breathing out”. If you notice the mind wandering from the breath, you can say to yourself – “thinking” and draw your attention lightly and without judgment back to the breath – breathing in and breathing out – one breath at a time.

Explore this anywhere from 1 minute to 15 minutes.

Simple Movement
Simply begin by making arm circles – reach your arms out and up, meeting in a high prayer above your head, and then draw your prayer (Anjali mudra) into your heart center.

Let your awareness shift toward uniting the breath with the movement. Encourage yourself to stay present with each breath, so you can be present for each moment as it unfolds. Continue to do this simple movement with the breath as many times as you need to in order to feel centered and balanced. When you feel ready to stop, pause for a moment with your hands in prayer at your heart center. Notice how you are feeling and see how that sensation can travel with you during the rest of the day.

http://www.yogajournal.com/newtoyoga/145_1.cfm

Mantra
A mantra can be a word, phrase, prayer or a part of poem – something that means something to you. When you use a mantra during your meditation practice you are giving the mind something specific or tangible to focus on. Silently in your mind or softly with your voice repeat your mantra. Enjoy the rhythm and the meaning of it. Let it fill you. If/when the mind wanders, lightly and lovingly draw it back onto your mantra. Even something as simple as a “let go” can become a mantra – as you inhale say to yourself, “let” as you exhale say to yourself “go”.