The Resonator

"We entered the laboratory in the attic, and I observed that detestable electrical machine, glowing with a sickly, sinister, violet luminosity. It was connected with a powerful chemical battery, but seemed to be receiving no current; for I recalled that in its experimental stage it had sputtered and purred when in action. In reply to my question Tillinghast mumbled that this permanent glow was not electrical in any sense that I could understand."

 - H.P. Lovecraft, "From Beyond"

As the Wikipedia page for "From Beyond" points out, Crawford Tillinghast's ill-fated experiments are arguably one of Lovecraft's most influential contributions to mainstream culture.  Conversely, Stuart Gordon's over-the-top 1986 adaptation of the story served as an introduction to the Old Gent's works from an entire generation of horror fans.

Back in 2021 Full Moon Features used the story as an inspiration for "The Resonator: Miskatonic U".  It's...well, I guess the best way to put it is that the project definitely meets the standards people expect of Charles Band.  That said, our old friend Dave Lowe was hired to create the titular Resonator and posted this BTS look at the process.  It's a fascinating look at the creation of an impressive prop using craftsmanship and creativity to make up for a shoestring budget.