Was looking at unwind(8) [https://man.openbsd.org/unwind.8] on #OpenBSD a bit the other day, didn't realize it can do blocklists.
So I added my SNAFU blocklist [https://github.com/RooneyMcNibNug/pihole-stuff/blob/master/SNAFU.txt] with:
$ doas vim /etc/blocklist
$ doas vim /etc/unwind.conf [add block list: "/etc/blocklist" to top line]
$doas unwindctl reload
and BOOM - blocking internet nastiness locally from the BSD box. 🛡️ 🐡