This will be impractical for smaller sizes, but I do like the free-form monthly calendar grids: a 7 x 5 array without dates where one fills in at the top the month, the year, and then marks in the corner of each box within the array the date. I have the semiweekly fill-in-your-own-date page grids.

In fact, maybe just adapting much of Stephanie Culp's 12-Month Organizer and Project Planner (http://www.amazon.com/exec/obidos/tg/detail/-/1558703608/103-1907442-1302251?v=glance) to a day planner format would make me giddy and ultra-satisfied.