Here is a fun little idea that you can support on Kickstarter. Its definitely not going to set the world on fire, but the Rekap ruler cap for the Bic Cristal is a nifty little enhancement to the standard cap.
From the video you can see a few great examples of how and when the Rekap ruler cap can come in handy. Although I don’t really use the regular Bic Cristal, I do occasionally break out the Bic Cristal 1.6mm version which are fun to write with. I think these caps should fit on those as well, but my best guess is there wouldn’t be matching colors for all of them. I’m hoping to get a review sample shortly, but wanted to share now because as always, time is of the essence on Kickstarter projects. Head on over to Kickstarter to support this one if you like the idea.