Babysitter: Tip a regular babysitter one- to two-nights' pay. Tip a daily babysitter or au pair one week's pay. In addition, give them a small gift from the child- they deserve it for looking after your progeny all year.
Doorman/ Superintendant: $10-80 for each doorman (depending on how much you have used their help), $50-100 for the Super.
Mailperson/ Newspaper Deliverer: $10-20 is appropriate for each, but if giving cash makes you uncomfortable, you could always give a gift card to Starbucks or Dunkin' Donuts of equal value.
Cleaning Person: If you have someone clean your house twice a week or less, a tip equivalent to one visit's fee is appropriate. Adjust the amount if they come more or less often. They'll be less likely to throw a red sock in with your whites.
Personal Trainer: $40-60, if you feel you have a good relationship and they have worked hard with you.
Hairstylist/ Manicurist: Depending on your relationship, you may want to double your usual tip during your December visit. This is unnecessary if you have no personal relationship with them.
Dog Walker/Groomer: Give the walker the equivalent of 1 week's pay, and the groomer $20-50, but only if you use the same one frequently.
Just when you thought you were finished with your shopping. On the bright side, at least you can shop for all these folks at the same place- the ATM.