This stretch is a favorite of mine and I find myself doing it nearly every day. There is a bit of a twist which releases the lower back and the shoulder stretch here is just enough to break free from some of the stress that binds us all up.
You can do this sitting or standing!
Sit towards the front of your chair and take your feet hip width or maybe wider. Reach down with your right hand and grab hold of your big right toe (or ankle, whatever you can). Press the back of the right arm against the inside of the right leg and knee. Take your left hand to the top of your left knee and press as you lift your chest up, look up.
Take it further, extend your left hand to the air and try to get your fingertips to touch the ceiling.
Take it further with a half bind, flip your left palm to face behind you, bend your elbow and slide the back of your hand down the small of your back, reaching your fingertips towards your hip crease or perhaps your inner thigh
To do this without a chair you will stand with your feet hip distance and forward fold. Bending both of your knees, reach your right hand to the inside of your right foot, anywhere near the big toe (I even like to hook the big toe like I did when sitting). Bend your right knee till you can press back of your arm to your knee.
Inhale your left arm up to the sky and straighten out your left leg as much as your body will allow. You will feel this in the hips in such a glorious way! However the shoulders are still getting some love, go deeper and create that half bind here as well.