I make tile, stone, marble, etc. calendars that are totally reusable as long as you use dry erase markers.  Just fill in the month at the top and the dates on the inside part of the calendar. The backs are finished with paint and 2 D-rings for hanging. These are rather heavy - usually over 10 lbs, so it is best to use an anchor when hanging on the wall.  Alternatively,  you can use an easel for table top or counter top.  These are all hand picked and designed , mounted on plywood, grouted and sealed with stone sealer. If you do not see a color scheme that fits your decor,  I can always find something specifically for you!