One unusual that I did - leech therapy on pts with reattached parts.
Two severe no-nos that were done at different facilities I worked at:
1. Nurse intended to give a unventilated pt in icu vancomycin, she accidently hung vecuronium.
Thankfully, when alarms went off, mistake was discovered. Pt intubated.
2. Nurse gave meds intended for g-tube down pt's trach tube. Of course, pt developed aspiration pneumonia. :trout: