Step-ups: Stand in front of a staircase and step up with your right foot, then up with your left, then back down with your right, then back down with your left. Repeat 10 times. If you need a little support, hold on gently to the railing, or better yet, just touch the wall with your finger tip and you'll be amazed at how much balance that gives you.
Resistance exercise (weight lifting, calisthenics): To promote and maintain health and physical independence, older adults will benefit from performing activities that maintain or increase muscular strength and endurance for a minimum of two days each week. It is recommended that eight to 10 exercises be performed on two or more nonconsecutive days per week using the major muscle groups.