Are you on the east side of Tokyo and want to rent a bicycle for the day? Alohaloco
If you need some information about bouldering, this website can help you - OnlineObservation
If you are into bicycling seriously this place can help you out with your training regime - CITTEC/Cafe Galibier
He mightn’t be in Tokyo anymore, but this guy makes some cool pictures - David Davis
Huckster - If you have a business in Tokyo and need some signboards, you need this company. I know the boss there and he’s a great guy
Knights in White Lycra - Want to get fit, and help the community? See these people
Road Trip Japan - Ever thought of doing a road trip in Japan? Yes? Then you might need their campervan
Timely Photo - not about Tokyo, but if you like photography you might want to check this website as it is very nice. Plus, it is run by a great guy who shoots Fujifilm!
Tokyo Times - run by Lee Chapman, this is my favourite Tokyo/Japan photo website. Brilliant stuff!