I have a set of Honda mechanic gloves, the shirt, a beanie, a FIT military cap, a mechanic shirt (from Honda thanks to Steve), and a keychain, a belt, air valve stem caps, Honda patches (never was able to find another set anywhere) and a whole lot of other stuff. In fact the cover to my book has my SOHC Honda engine on it.
If you do a business, call Honda and get in touch with their legal department for permission to use the Honda symbol. I had no problems getting legal permission for the cover of my book and I even got permssion from DC Header.
Their legal team does pursue those using the Honda logo without permission. Just look at hmotorsonline.com which use to be hondamotorsonline.com.
btw I would be interested to see what you come up with.
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if you can only race me in a straight line then whats the point 
...91 SMF SCCA
http://www.flickr.com/photos/8341770@N07/5601083432/http://www.flickr.com/photos/8341770@N07/5601083432/ by http://www.flickr.com/people/8341770@N07/, on Flickr
I see people out there spending money on the car to improve it … If you spend half that effort just working on your driving skills, making you and the car work together as a team, then you’ll go faster – period. To make the car go a second faster on the track takes a lot more energy and money than making yourself drive it one second faster.
– the late Tom Thrash SCCA Solo E Production