Pineapples might not be the first thing that comes to mind when thinking about decorating ideas for Halloween, but it turns out the fruit works pretty well as a tropical alternative to the traditional pumpkin jack-o'-lantern.

Need proof? In the lead-up to this year's spookiest season, people have been sharing pictures of these spiky-haired fellas on social media.

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And as photo evidence from last year suggests, pineapple lanterns go down well at a party too. Particularly if you're serving piña coladas.

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While their prickly exteriors mean the carving options are quite limited — a triangular eyes and nose looks like it's the easiest design to go for — the process isn't too difficult, according to this YouTube video.

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Once you've chopped off the top, the tutorial recommends using a pineapple cutter to remove the inside of the fruit, then you'll need a knife to carve out the face and a tea light to place in the center.

As the tutorial warns, the pineapple version won't last as long as a pumpkin, but its sweet aroma is sure to smell pretty good. And if trying the pineapple trend sparks an urge to experiment this Halloween? Apparently pepper-carving can be done, too. (And avocados.) (Actually maybe anything can be a jack-o'-lantern.)

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