These are simple and you can pretty much do them anywhere.  Enjoy!
1.) Sit in a chair with your back straight, feet flat on the floor, hands in your lap. Become aware of how the chair and the floor are supporting you. Hold the awareness for a minute or two.
2.) Breathe in to the count of eight, breathe out to the count of eight.  Try to make the flow of breath a steady stream in and out.
Try this for about three minutes, at first.  You may decide to go longer, later.  If eight feels too difficult, start with a count of five and work your way up.
3.) Gently, put your pinky fingers in your ears and listen to the sound of your own breath for about 10 breaths. Be sure to rest your elbows on your desk or somewhere, while you do this.
4.) Kick off your shoes and use the toes of one foot to rub the sole of the other foot and then switch. Feel the difference when you put your shoes back on.
5.) Use two hands to tap your whole body  Start with one foot and work your way up the leg, then tap the other side.  Get to every part you can reach.
5.) Drink 12 ounces of water, all at once.
6.) Sitting or standing, gently drop your chin to your chest, then slowly gently sweep your chin across your chest all the way to the right and then all the way to the left.  Go back and forth, steadily and continuously, as if you are drawing a smile on your chest with your chin.
7.) Arch your back and then curl your back, several times, using a slow, steady continuous movement, notice how your breath flows with the movement.