The Slick Bib is a Kickstarter project that I just decided to back, even if it's possibly a solution in search of a problem. Here's a picture of it:
It's a tech shirt with a transparent pocket for holding racing bibs, thus avoiding the need to poke safety pins through whatever other racing shirt you'd wear. One downside is that you won't be wearing the shirt provided by the race organizers (if there is a race shirt) - but that's not really an issue for me because I don't like to wear race shirts at the race itself. It's not exactly a superstition, just more of a tradition.
Now, not having to mess with safety pins on cold mornings is a definite plus - and those late November to early March races can get chilly in the Pacific Northwest. Of course, this is a short sleeve tech shirt, but it can just over a baselayer longsleeve.
Anyway, this may be something of a luxury purchase (assuming it gets sufficient backing; it's only 1/3 of the way there) but it's also a pretty neat idea.