"I never tried this today" "Are we there yet?" "Is it tomorrow now?" Small kids have no sense of time. Presenting them with a visual calendars seems to help a lot.
Now we do monthly calendars. With a space for a picture (either to color or to draw, depending on what we feel like). The order of the events and the idea of time are not the only things that kids learn when they make their own calendars. They can practice counting, writing, drawing or coloring; they learn days of the week and months. You can also count how many days are until the special event.
TIP: For the younger kids, fill in some of the numbers and/or use a yellow highlighter to write the numbers for them to trace.