"You Can Now See Where The Spare Key In My Wallet Is"
"My Dog Made A Perfect Circle In The Grass From All The Years He's Been Running Around"
"Very Worn Out Stairs That Have Been In Use For Hundreds Of Years"
"Stone Steps Outside Of The University Of Cambridge"
"A Heavy Ship Propeller Sinking Into The Soil Over Years And Leaving Its Mark On The Wall"
"The Multiple Layers Of Floor Worn Through In The Service Bar At This Restaurant"
"13-Year-Old Vader Keychain vs. A New One"
"One Headstone In The Graveyard Of The Kirk In My Town Has Completely Worn Through"
"Wear And Tear On Hiking Boots. New vs. Old"
"In Downtown Cincinnati, All The Roads Used To Be Cobbled Instead Of Asphalt, And Apparently They Never Tore It Up"
"My Wife's Old Pair Of Dr. Martens vs. Her New Pair"
"The Difference In My Work Gloves After Using Them For 2 Weeks, One Week And New"
"The Difference In These Stacks Of $1 Bills That Are Used vs. New"
"A New Trail Marker vs. One That’s More Than 20 Years Old"
"My Boss's Laptop's Trackpad Is Worn Down To The Circuit Board"
"My Mum Replaced A Wooden Spoon After 53 Years Of Use"
"The Counter Of Chet’s Diner In My Hometown In USA"
"You Can See All The Colors Of The Disneyland Teacup Because It's Worn Off Where The Door Closes"
"How This Wall Has Eroded Over Time"
"My Good Boy Has Been Rubbing Himself Against This Wall Every Day For 3 Years"
"My Daughter Isn't Walking Yet, So Her Shoes Are Wearing Out Backwards"
"You Guys Have Any Idea What The Code Could Be?"
"Cup I've Been Using For A Few Years Shows The Consistency Of Tea Stirring"
Many combinations are possible of those 4 digits.