Google has a Google Store for buying all stuff related to Google. This is how they put it “You’ve found the right place for all things Googley. Whenever someone asks for help finding their way online, just point to your tasteful Google accessories and smile. Or thank that special someone who told you about the best search engine on the web. Whatever you’re searching for, the Google Store’s got it.”
Goods in stock are dispatched within 2 working days. All deliveries are made from the United Kingdom and delivered worldwide. You can also return the item within 10 days, along with the original invoice to credit your account, or exchange the item for another selection.
Check out the full catalogue on the Google Store. There is also a huge collection of Books about Google on Amazon.