I would love a garage calendar. I just always use the one I get from my Snap-on franchisee.
http://stores.nationalpremium.com/snap-ongifts/SKUDetails122F447270.asp
I have a similar box layout in my EPIQ Snap-on cart. I love the layout those boxes, as I am normally really scattered with my tools. I get most of my stuff from my franchisee, and the rest from http://stores.nationalpremium.com/snap-ongifts/main.asp.