I did try to look through this to see if it has been answered, but attempting to find a GPU accelerated nostr vanity address generator, and this is as close as I've found so far. Obviously not the same thing but, just trying to figure out if there is a branch of this that could do that, or something else made to do so? Using CPU only is brutal.
You could go to project development :
https://bitcointalk.org/index.php?board=12.0 there are some windows GPU versions, some are not open source, so do your research before using.
None of those are Nostr vanity generators. AFAIK, nobody has made one yet, which is not unreasonable when you consider that Nostr is a very recent invention.
[for the record, VanitySearch cannot find Taproot addresses, but it should be as simple as checking for an input prefix that is either bc1q or bc1p to allow that. I was able to use VanitySearch to generate arbitrary prefixes not starting with 1, 3, etc, in my experimental builds.]