It's a bit late, but in 2020 the Monkie Kid line contains a minifigure-sized pig head:


very late to the game here, but why can't we use the existing hole as a guide for an appropriately sized drill bit, converting it from friends accessory size to standard lego horn size? If you drilled it slowly by hand, it would be really hard to mess it up.


Another possibility is one of the pig minifigures from the now-discontinued 2016 The Angry Birds Movie theme. For example, see set 75822, Piggy Plane Attack:

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