a useful schedule clock

a wall clock that is made with dry erase marker stuff and has no numbers on it. instead of numbers there would be little lines by every hour. this way each day you could fill in your schedule for each hour. obviously at noon you'd need to fill in the rest of the day. i think ideally i probably wouldn't use it that much but I'd hang it up and have things to do from 2 weeks ago, but gosh darn i'd love the idea of it.