Take a rope or a belt and hold it under your armpits. use your body movement and transfer it from side to side and front to back using just your body and arms till your elbows. Next take the belt and hold it in your elbows and move it around. now hold it at a comfortable distance in your fists and see where you can go with it and with a partner defend yourself by moving with the belt. From time to time shorten the distance between fists and see how you learn from this.
It is also good to check how you work in tight places like under a door or sitting next to a table. Giving yourself limitations lets you find new ways to move and solve problems. This way you have a better sense of movement and intuition when a problem arises.