I have a white board at the front entrance which I use for everything. I write the menu on it daily for everyone to see and each child has a line for bowel or toilet training, eating and behaviour as well as an additional comment line if anything else needs to be addressed. I only log in bowel movements for the first few months unless the child has issues with regular movements, and/or if they have not had a movement for 1-2 days. I use this board to remember what needs to be discussed such as new words for babies, good behaviours for toddlers, new attempts at play or new successes at crafts etc....
Like others have written, without the board I tend to forget what I have to report.... even what we ate sometimes!
The board can also be used by the parents if they have something to discuss that I can not address at drop off, or if there is a change in the normal schedule.