Ask HN: Can you suggest an interesting skill?

Slight of hand, card mechanics (basic card tricks, forcing, double lifts, dealing under, etc), memorization games (rubiks, deck order, X random numbers from Y crowd members), mental math (give me any two two/three/four digit numbers to add/subtract/multiply/divide I'll beat your calculator), day of the week calculation (give me your birthday/anniversary I'll tell you the day of the week)

edit: instruments, double jointedness

The primary key to any such interesting display is discretion. If everyone knows you play the piano, no one cares. If no one knows, and you hit Tchaikovsky's 1812 in the mall, everyone's shocked.

Juggling has always intrigued me. While out for a walk the other day I saw someone practicing.

/grill-me | /grill-me-with-docs

https://www.youtube.com/watch?v=gaDdrDdczO4

looks like he has some new ones

I clicked on this thinking you were talking about new skills to learn, lol.