So in a strange turn of events, the subject of Holy Water came up IRL recently and it got me thinking. I'm a few million miles away from my Catholic upbringing, and never really learned about Protestant practices. So questions, I guess, for my erudite frens:

Is Holy Water a Catholic only thing? If so, how do I obtain it from a truly Godly source? I know the local Catholic church I have passing familiarity with is... Questionable in it's Heart. And I have a feeling buying it from Lourdes is tantamount to blasphemy.

Any advice would be helpful; this idea just popped into my timeline and I feel compelled to pursue it. 100% serious and sincere.

P.s. Think Mirror? Vampires. Etc.

Thanks in advance, yours in Christ.