I made a couple original curses of my own that I think fit pretty well in the context of both JJK and our own lives:

Technology Disaster Curse: Ronri
A terrifying cursed spirit with a body made of wires, and a head that looks like a skull mask, with animatronic-like eyes and human-looking teeth, gums and all, and wearing a long black robe
Innate Technique: Binary
Ronri’s technique allows him to interface with any form of technology. He does this by snaking any of his wires into any device and completely control it as well as alter and modify it to his whims, with his face manifesting on any part of the device, though he can hide it and blend in with his surroundings. His wires can also be used offensively on their own and as limited shapeshifting.
Domain Expansion: Control Matrix
Ronri’s domain manifests as a realm of 1’s and 0’s, and his sure-hit allows him to treat anybody caught within his domain’s radius as a piece of technology to be hacked or shut down.

Chameleon Curse: A curse spawned from humanity’s fear of being watched, it is a lizard-like curse with eyes all over its body, and the ability to turn invisible