One of the things that can keep Oliver interested, occupied and generally stop him from trying to climb the furniture for a few minutes is a good book.
He has some "touchy feely" books from Usborne that he particularly enjoys. He sits and looks at the pictures, touches the textures (see above) and even turns the pages (see below)! It's a great way to pass a few minutes with him whether it's 7am or 7pm.
Hayley has given him books of some description to "read" from very early on. She is so much more clued up than me on that sort of thing. I would probably have assumed he was much too young for books. She often takes him to the library where he helps her to choose books to borrow. He even has his own library card!