...although most of that was figuring out the right search terms to get the one(s, plural) you're thinking of. Quite a few other people have made attempts, including attempts to continue these ones.
They appeared in an online comic strip by Dan and Tom Heyerman called Pants are Overrated in 2011. Between May and October 2011, four of the Pants are Overrated strips were tributes to Calvin and Hobbes taking place about 26 years after the end of the original. Calvin is in his early 30s, he's married Suzy Derkins, and they have a little girl named Bacon who's about the same age they were in the original.
The original site no longer has the content, though a posting from February says it's under construction to get it back up and running.
In the meantime I've saved copies to the Imgur account I use for when I want to post an image that I can't directly link to.
So here they are, with a bonus treat: Guess who was nightmare fodder in 2011!:
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