So here is one where I took a piece of cut seatpost and just duct-taped it to my rack:


And this is one for tibikefor2 because he wants a way to mount it on the cross bike:

There are a couple of ways to rig it. The thing is you need a fore aft not just a horizontal anchor or it will slide around. For a seat like mine with a cut-out, you can just drill once all the way through the tube (PVC works as well as chopped carbon fiber, and you can always color it black with a magic marker) and loop around a long zip tie to snug it up. Or you can drill two off-center holes and wrap it all the way around the post itself. In this case you will want to cut it slimmer than as shown and then it will wedge between the rails.

Of course, this takes away your ability to carry a seatbag, but I don't need that anyway. I just keep my tools in a plastic envelope in my bag, and as I use different bags, that makes it simple to swap things around. If I go for a weekend ride they can go in a jersey pocket or the seatbag.

If you haven't heard of this light you can go to www.dinottelighting.com. This is about the brightest tail-light out there:


I don't mean to be shilling for them - I confess they did give me a pro-deal on this light - just throwing it out there for your consumtion. I feel safer with this light behind me and people do seem to give me a wider berth, especially on high-speed roads, because they can see me from so far away.