https://www.moneytalksnews.com/should-you-tip-your-garbage-man-9-rules-for-holiday-tipping/
"It is considered customary to tip the:
- Garbage collector
- Baby sitter
- Newspaper deliverer
- Handyman or handywoman
- House cleaner
- Hairdresser or barber
- Personal trainer
- Massage practitioner
- Caregiver
- Manicurist
- People who groom or walk/feed your pets"
This isn't talking about your general "I'm going to tip because I just got good service". This is talking about "It's the holiday season so I'm going to give everyone a holiday tip/gift now for their service throughout the year."