The bird into glass problem is solved by gluing alternating white and black images of birds in flight to the glass. I used to work in a 13 story glass lab building. It was lit at night by internal metal halide lighting. Moths to a flame so to speak. So the mezzanines got low power halogen at night and bird markings on the glass. Worked a charm, and no piles of dead birds in the morning.
If you want to ruin someone's day, find a open DB9 hole on a piece of gear and insert mouse. The urine will quickly corrode a PCB, it will be unrepairable in less then a hour. I lost a prized PTS160 RF synthesizer to that. I kept it on hot standby, and Mrs Mouse moved into raise her brood in the warm synth. Expensive lesson. A day spent attempting to remove the corrosion and save the unit was wasted time. Even with gallons of solvents.
Steve