In spite of the rumor that you "should" feed your parrot grit, do not do so. They do not need this, and grit can cause crop impaction, so he'll be unable to digest his food properly. Excess grit in the gut can lead to death.
Never feed peanuts to your pet bird. Peanuts contain aflatoxins that are harmful to birds, and fungus can grow inside the shell, that can make your bird ill if he is exposed to it. This includes peanut butter. (The Umbrella Cockatoo in the photo is eating an almond.)
Here's a list of other things not to feed birds:
Source: Parrots For Dummies and other sources.
By one.of.a.kind from AL
This page contains the following solutions.
For easy cage clean-ups I place newspapers on the tray on the bottom of their cages. For bathing I put warm water in a spritzing bottle and spray them.
I noticed that Perry, my budgie or parakeet, is very unsociable and likes to be left alone, so I have to find ways to interact with him that don't make him startle.