What product has a better use than its intended function?

1. Neoprene. Apparently it was originally used as a lining for industrial waste but obviously now makes a good wetsuit (and has many other industrial uses).
   — notenoughtimetoride


2. Tube guitar amps. They were never intended to produce distortion, but a whole genre of music was born by "misusing" them!
   — DaveCanada


3. Pennies are far more useful for checking your tire treads and making souvenirs at the zoo than being used as currency.
   — foreveralone323






4. Royal Dansk tins as sewing kits. It seems universal, every person I've spoken to, every ethnicity, age, culture--- they all know about it. Amazing.
   — hazelnutdarkroast


5. I never once used baby oil on my baby... but I use it to remove eye makeup whenever I wear eye makeup.
   — metubialman


6. A tennis ball. Entertains animals for days, works as an amazing massage tool in physical therapy, protect your floors from chairs that scratch and more!
   — siliconalleymarketer






7. Clear nail polish works so well to fix small holes or seal things. Edit: like the small hole in my giant popsicle floatie
   — steveofthejungle


8. Originally, gasoline was a by product of making kerosene. Dunno if it counts but by products don't usually have an intended use.
   — YddishMcSquidish