The bike tools part was interesting to me - I started out as a bike mechanic and set up my own shop at 25 with up to $150k later invested - but that was back in the 90's when it was a cool scene - mountainbiking, road racing - none of the modern eco hippy sit up and beg bike gimps.

But even then being a mechanic was a low paid job. I still have a pretty cool home workshop but seldom use it these days.

http://www.frot.co.nz/cs/cycle_services.htm