Here is a leg stretch using the barre - but you can do this with a countertop or something similar as well. This stretches the inner thighs and the side of your core. Stand close, no further than a forearm's distance away, to the barre with your feet and hips turned out - meaning heels together, toes apart - and legs straight.
Lift one leg to the side and up onto the barre, keeping your hips turned out so your lifted knee faces the ceiling. Keep your lifted hip tucked under - aka don't stick your butt out! The most important thing is to keep your legs straight so you are properly stretching, and don't strain your body. You should feel a stretch, but not pain!
You can also straighten up your upper body as if someone is pulling your spine up to the ceiling, and lengthen over the leg, stretching the opposite arm over and grasping your foot if possible. Be sure to keep your chest and ribs open to the front; don't let your opposite shoulder roll over to face your leg. This should cause you to feel a stretch on the side of your body.
Hold for a few breaths and repeat on the other side!