Back in my SIL4 days, we had a de-capped memory SIMM in the lab that we used to test resilience to cosmic rays for certification and other testing procedures .. often requiring a junior dev to sit there waiting for the signal and remove the lead shield we'd place over it when not testing, in order to trigger a cosmic bit shift. We had t-shirts for those guys "Guardian of the Cosmic Bit" printed up, was a fun time ..