A brush-pass wire conduit plate attached to a wallbaord-mounting frame attached to a reasonably long rectangular 3D-printed conduit tunnel with an angled entry/exit point at the far end, all for running cables through a closet ceiling and into an attic without having a bunch of random holes.
https://mastodon.murkworks.net/system/media_attachments/files/116/433/409/476/741/892/original/c4178084cb754141.jpeg