From the Galahad Eridanus video "All Along the Watchtower" (July 29, 2023):
From The Legend of Zelda: Ocarina of Time (1998):
From the music video for "The Waiting" (1981) by Tom Petty and the Heartbreakers:
Note that all three of these have a "time" theme: Past, present, future. Ocarina of Time. Waiting.
In the Galahad Eridanus video, the object is a rotating octahedron, often appearing, as in the screenshot above, as two triangles, one upright and the other inverted. Seen from another angle, an octahedron can appear as four triangles: a central triangle with each of its edges shared by one of the other three:
The Legend of Zelda "Triforce" symbol can be seen as consisting either of two triangles (a large upright one and a small inverted one) or of four (the central inverted triangle sharing one of its edges with each of the other three). And of course one can also ignore the negative-space inverted triangle and see it as three triangles -- that being the point of the name Triforce.
Look back at the Zelda screencap. The radiating lines are blue, and the central inverted triangle appears blue, too. Rotate it 90 degrees to the left, and you have what we see in the Tom Petty video. The blue triangle seen above is one of a set of three triangles, as in the Triforce:
There's perhaps a nod to Crowley in this theme, too:
Nothing in that logo is original to Crowley. The Eye of Providence, in a triangle, radiating light, is a ubiquitous theme (and no, it's not exclusively Masonic).
"The Statue Got Me High" -- the TMBG song I associate with a Triforce-like image -- says "The monument of granite sent a beam into my eye." Beams being sent into eyes, rather than radiating from them, are covered in the Eridanus video, too:
Note added: The Walk the Moon video "One Foot" (posted by William Wright here) includes somewhat similar imagery:
Further note added (October 28): John A. Keel's book The Eighth Tower came up in an /x/ thread, so I looked it up on Anna's Archive. Here's the cover art:
