This is a revised version of my previous daily pen holders, but more stable. I do quite a bit of writing during the week. This tool helps to keep things organized by encouraging the use of a different color pen every day. This design is set up for the Pilot-G2 Pens. The holes are labeled MON, TUE, ... for each day of the week. When used consistently, you can look at materials you've written and it will trigger the realization that "Oh, I wrote that on Tuesday. This is a variation of the Daily Pen Holder I designed a few years back.