What more can I do to help my blind dog cope with his recent loss of sight?

My 11 y/o snoodle (schnauzer and poodle mix) has just gone blind within the last week. He has diabetes and has to have insulin shots every 12 hours. His diabetes may have been late in diagnosing and is a contributing factor to his gradual loss of eyesight. The vet warned us that even with his shot regimen to control his diabetes, blindness was probably inevitable. So now we are coping with his blindness by tapping on everything from his feeding bowl to the exit door to the outside. Fortunately, he can still hear and smell well so he appears to be using those senses to compensate. I'm not moving any furniture and his normal pathways through the house are kept barrier-free. Can anyone think of anything else I can do to help him live the rest of his days relatively happy and comfortable?