Training Wheels
Training wheels are detachable auxiliary wheels attached to children's bicycles to provide stability while learning to ride.
Estimated value as of 2026 · Source: Target, Walmart average prices for basic kids bike training wheels
Fun Fact
Training wheels were patented in 1875 by African American inventor William H. Richardson as a rear-wheel attachment for children's velocipedes, predating modern bicycles by decades.
Price History
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Snow Plowing
Snow plowing is a professional service using plow trucks to clear snow from driveways, sidewalks, and parking areas for residential and commercial properties in the United States.
Grand Piano (Steinway & Sons Model D)
Professional-grade concert grand piano with 9-foot frame.
4-Year College Degree
Average total cost of a 4-year degree at a public university (in-state).
Rolex Daytona 'Paul Newman' 1969
A rare 1969 Rolex Daytona Reference 6239 with exotic dial, the iconic sports chronograph worn by actor Paul Newman for 15+ years.