Hi!
You should definitely start training your dog to accept you being around his toys, bones and food. This sounds to me like he might start being pocessive of his belongings and it will get worse if you don't do anything.
The easiest thing to do, is to start to exchange a treat for whatever the dog is playing with. For example, if the dog is playing with a toy, you can walk up to the dog, drop a treat in front of his nose (something that he wants more than the toy), and then to take the toy away from his sight. (By placing it behind you.) And then once he is done eating the treat you can give him back the toy and act like nothing happenned.
When you do this, the dog will learn a few things. First that good things happen when you come close to him and his toys/bones/food. And second that you don't actually take it away from him since you give it back.
You should start practicing this with toys, as he is more likely to accept you being around him. And then to do the same thing with bones.
Don't neglect doing this with his foodbowl too! Too many owners can't even get close to their dog's foodbowl once it's filled up. That is so sad since the dog can easily be trained to accept being around. Once the dog has started eating, you can walk to your dog and drop a few (yummier) treats in his bowl. Eventually you can sink your hand into the bowl, and then drop treats on top.
Eventually, you want to be able to walk up to your dog while he is eating his dinner, take his food bowl away and put gravy or something that he loves on top. And then to give it back to him.
Doing this will enable you to take away anything from your dog and he won't make a fuss out of it. If you train your dog now - you won't have this problem later on.
Well of course, if you always take things away from your dog without anything he won't want you around them. Kind of like being around a kid who comes up to you and steals whatever toy you're playing with.
Hope this helps,
Jean