LED lights, make your own?

btw, tynan, when you showed your seatpost light, the reason i though it might "snappy, snappy" is cause i thought you made it out of a plastic, clear tube

and then simply put in a light inside that shines....<<< surely that would be way easier, no?

ive patented plastic tubes used as seatpost, so no one use it!!! :)

A clear plastic tube would break pretty quickly, perhaps even instantly when weight is applied - not only is this very unsafe as you would lose control of your bike, but the way plastic fails would guarantee that sharp shards would be left for you to puncture yourself as your support collapses.

I will let you visualise which part of you body gets stabbed with the shards ! :S

You are also unlikely to be able to apply enough torque at the seatpost clamp to stop the plastic (which has a low friction coefficient) from slipping - the post will likely crush first.

And you would also have to work out how to fix the seat clamp assembly to the top of the plastic tube.

This also sounds not only much much harder to do, but very dangerous and in no way robust enough to ride.