Show up and work at your best lawns the week of Christmas. This year Christmas falls on a Saturday, so you should be able to work up until Friday. I would send a Christmas card to arrive around the 21st. This will keep you in their mind and encourage some holiday spirit when the customer sees you working. Even if you are done with clean-ups, it is a good idea to go by and fire up the blower to make sure the front porch and patios are clean for the holiday. I will rarely get a tip in the mail, usually they are given in person. So it helps to be around if you want one. Most tips are usually around the cost of one cut. Unless you are lucky. Good luck! Happy Holidays!! GO SOONERS!!!