I do wonder about lasers, removing the protection used to reduce the cost. There were stories of blindness but they seem to have disappeared, maybe they were never true - https://www.newscientist.com/article/dn14310-party-laser-bli... (Party laser 'blinds' Russian ravers)

Reported specs from ApeFest here - https://www.bulbs.com/product/TUV30T8-G30T8 (Same wavelength as a SteriPEN)

  Philips Sterilamp® brand T8 germicidal fluorescent lamp. 30 Watts and 36" for use in germicidal sterilization applications.

  Produces UVC radiation.  CAUTION: can be very harmful to eyes and skin.  DO NOT expose eyes or unprotected skin to these lamps.  SERIOUS injury and blindness could result.

They were popular during covid. It's undecided how well they worked - DOI:10.1111/php.13418 (Fully exposed in rooms when unoccupied, also a not visible bulb always on)