So if you are running low on coins and you are scared about changing the date then here is a quick and easy tip. all you do is wait until you have a collectible you already have and make sure you have 2 people near/next to it. Then put one person on it and whilst they are picking it up put the other person on it and they will both carry it. if you want to save more time then move your people and you will still get the coins.