Dawn, the first thing you need to do is take Bob's cage and put it somewhere out of sight. I say this so that it is not a constant reminder for you.
You can totally disinfect it with bleach and water. Once you have the histopathology back, you will know how to proceed from there. I don't share any toys with my birds. What goes in one cage stays in that cage. So, you may want to toss any wood toys. Those that are acrylic or plastic can be run through your dishwasher on the hot cycle.
My heart goes out to you. There will be many days of sadness ahead. It will get worse before it gets better, but it will get better. We heal, but we never forget. Sending you huge hugs.