Note Guard

So, again, fairly obvious here:

What happens when you set out to draw something great in your spiral bound notebook? Well, if you happen to be using one of these pens:

you are going to wind up destroying 1/2 the pages in your notebook. Your nice, capable pages are going to bleed.

So, use this:

It's a noteguard. A hard plastic sheet that folds up into your notebook (when not in use) and can reduce your page mortality rate by 100%.