What work(s/ed?) for me (but only when you have no shoes on) is putting your feet on your knee. With your left leg raised: put the left heel, on the left-top s

What work(s/ed?) for me (but only when you have no shoes on) is putting your feet on your knee. With your left leg raised: put the left heel, on the left-top side of your knee, arch the foot around the knee, so your toes end up on the right side of knee below it. Works best if you have clothing that has some friction.