1. Top of the refrigerator
  2. Nose piece/bridge of eye glasses
  3. The space between your toes
  4. Outside "Welcome" mats
  5. Floor trim/baseboards in the kitchen
  6. Rug outside the shower/tub
  7. Your belly button
  8. Garage corners
  9. Behind the washing machine and/or dryer
  10. Top of doors
  11. Cup holders in the armrest of cars
  12. Small Children
  13. Static
  14. Underside of any school desk.
    Suggested by @PassiveAggressor
  15. Public Handrails
    Suggested by @kate81
  16. Behind the toliet
    Suggested by @hillary79
  17. Edges of cell phones, underneath the case
    Suggested by @aknott21
  18. Between the keys of a keyboard
    Suggested by @_sarah
  19. Public Garbage Cans with Flappy Lids 😧
    Suggested by @kate81