I'm currently on the hunt for the 4Koma four-panel comics Oda occasionally drafts for WSJ's Christmas and New Year's issues. They've never been published in English, probably for good reason as you'll see with the one below. I did find the most recent one from 2016, translated it courtesy of my lovely wife, cleaned it up and typeset it using the standard VIZ-styled fonts and formatting. (Tip: the WildWord font used for normal text is squeezed to 85%; at 100% it's too wide.)
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New Year 2016
Source: https://archive.org/stream/mangamag_Weekly_Shonen_Jump_Japan_Version/2016%20Editions/Weekly%20Shonen%20Jump%20Edition%2003-04%202016#mode/2up
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! Original Japanese: https://i.imgur.com/yW4MGai.png
! Blank (For other languages or anything else): https://i.imgur.com/Na6M7sA.png
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Christmas 2013 (VIZ Translation)
Source: redon
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! Original Japanese (With bonus Naruto strip): http://www.imagebam.com/image/4383bb296917084
! Blank (For other languages or anything else): https://i.imgur.com/QLUiEH0.jpg
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WSJ 45th Anniversary
Source: http://onepiece.ria10.com/Entry/2336/
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! Original Japanese: http://blog.cnobi.jp/v1/blog/user/69109cc0812f8a666099a5b060e3e0e0/1357307333
! Blank (For other languages or anything else): https://i.imgur.com/cFppqKG.png
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2000 Gold Pieces:
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Merry:
!
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Thank's to Solid's sleuthing, we should have all the comics I was looking for. Just in case anyone has the actual magazines and could scan in the full resolution pages, I'll leave these up for reference:
! Chopper's Luck-Laugh (チョッパーの福笑い)
https://comicvine.gamespot.com/weekly-shonen-jump-2152-no-5-6-2012/4000-511257/
! Policy (ポリシー)
https://comicvine.gamespot.com/weekly-shonen-jump-2104-no-3-4-2011/4000-511261/
! Merry (メリー)
https://comicvine.gamespot.com/weekly-shonen-jump-2056-no-3-4-2010/4000-419168/
! License Revoked (消されたライセンス)
https://comicvine.gamespot.com/weekly-shonen-jump-2009-no-6-7-2009/4000-511275/
! Luffy the White-Bearded (白ひげのルフィ)
https://comicvine.gamespot.com/weekly-shonen-jump-1767-no-4-5-2004/4000-304618/
! 2000 Gold (2千もの黄金)
Found in something called eJump from Christmas 1999; if it was online only, it may be long gone…
! And for the record, if anyone has the issue the strip I found came from and could scan it in at a higher resolution, that'd be amazing as well:
https://comicvine.gamespot.com/weekly-shonen-jump-2344-no-3-4-january-15-2016/4000-508761/