Keep files and supplies within easy reach. Use vertical files on your desk for current work. Install work assist arms or wrist rests at your keyboard. Use a glare screen and paper holder on your monitor. Use lateral file cabinets for easier access.
Leisure Wear good walking shoes that fit and provide good support.
Elastic shoelaces or Velcro closures make putting on shoes easier. Use a card rack or holder or a brush to hold playing cards. Use felt-tip pens, which require less pressure, or larger pens, which are easier to grip. Use a push-button phone or a pen tip to dial. Get a headset so you don't have to hold the receiver.