A Hacker News user shares how to make your own safe and effective plastic tooth aligners, straightening your teeth while saving a bunch of money.

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A farm owner in Corbin, Kentucky shares how his grandfather worked for the original Colonel Sanders (and shares the diner that still serves the original KFC fried chicken recipe.)

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A thread on the importance of acoustics for food storage.

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In a thread about people with names that break computers, one HN user discusses having a vanity license plate called “NULL”.

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An interesting discussion about rare fruits and vegetables that are not often found in supermarkets.

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If you experience a thoughtful, surprising or delightful moment on HN, submit your suggestions to us for future HN Highlights via macro@ycombinator.com.