Gary,
Well, I didn't find any tools when I was on Oahu for a week, many years ago. There was a large flea market in the Aloha Stadium. What island are you planning to visit? I've heard from a navy vet who, until recently, owned a home on Oahu that there is a big increase in crime on the island. I think she would have stayed there forever otherwise. I don't want to be discouraging, just want you to be safe.
We were there 24 years ago. It was probably the best vacation we ever had. We visited Diamond Head, Eternity Beach, went to a Luau, snorkeled at Kahana Bay, visited the USS Bowfin submarine, ate great food, drank Mai-Tais, sat by the pool every morning and the sea every afternoon.
Hope your knee heals quickly. I use one of those padded supports when my knee acts up.
Al