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At our company we still use a MC68HC11 for an industrial device.

Be careful -- they're rapidly going obsolete. No one wants to fab old EPROM processes, and no one wants to package PLCCs anymore. If it's neither of those, I think you've got a bit more time.

There are "compatibles" out there, and some of them are very good indeed, but they're not without their hassles.

I think I have a 68HC11 sitting around that I picked up for a project and never used. I wonder if it's worth anything?

One-off hobbiest/repairman/desperation quantities will be available for years. It's industrial, new-build quantities that are going to be problems.

And, yes, the 68HC11 was on December's EOL list, so I hope anyone who was using it in products has a plan! (Or hire my company, we fix things like that... not that it's the most fun work in the world, we have other things we'd rather be doing....)

Can't you just use one of these?

https://www.microsemi.com/existing-parts/parts/151966

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