The easiest way is to click right on someone else's. That will take you to one of the sites that makes the tickers. They'll provide you with options and a full set of instructions.
Well for my four year old at home I used disney scarpbook paper with some disney post it notes that I found on clearance, I have him take one off each day and read the numbers. I like that he is also learning his numbers. I am hoping this helps him realize how soon we are going!!!!! I think you were asking about the countdown on here, sorry lol. I want to know also!!! lol