Stand and look around you. Now close your eyes and step 10 paces forward. Turn half way to the right and step sideways 6 paces. Turn half left and take 4 steps backwards. Now still with your eyes closed work back and see if you can reach the place where you started. This teaches how to measure space without sight and can be of help in case you need to backtrack or work in buildings and the like. Another drill in your house can be to walk through the entire house (if there is only one room, you can add obstacles yourself) without stepping on furniture, cats or walk into walls.
