Hunching with small movements is a gentle exercise to loosen the upper body
Turning brings in different joints and muscles
Side swinging is another simple movement
Squatting gets the back going
Toe touching does as well
Olique toe touching
Rocking is a very good exercise when walking is restricted by space.
Rocking and oblique toe touching
Combining hunching, twisting and side stepping.
Finally an exercise called 'sitting pretty'.