It caught my attention that there's still no easy way to rotate an Azure Function App's host key, in case you want to do it regularly and put it into a Key Vault. There are many scripts available online but none of them did the work I needed, so I compiled them into a single and simple one.
The code is also in my AzureFunctionsPowershells GitHub Repo, which I hope will grow eventually (with enough sun and water, I presume).