It is traditional for seniors at this school to do some kind of prank on their last day of classes (there's a 3 week senior project block, so this is in earlyish May)
My all time favorite - because it was non-destructive, easily undone, and *clever* was to plant cheap alarm clocks (set to the same time, during a free study period). We got the hint when the entire senior class showed up in the library, and then we started hearing the clocks go off.
They were *very* clever - they'd obviously gotten someone to let them in later in the evening or very early in the morning, and had had access to a ladder, because they'd gotten a few in the removeable ceiling tiles, one on top of the hanging artwork goose (flat back: they'd gotten it just between the wings) plus a whole bunch of more obvious places - desk drawers, under the library step stools, behind and on top of bookshelves, etc.
We kept finding them for about a month (every day, something'd go off, and we'd track down the closest ones we could isolate), but there were several that never went off, and I still find occasionally.
no subject
My all time favorite - because it was non-destructive, easily undone, and *clever* was to plant cheap alarm clocks (set to the same time, during a free study period). We got the hint when the entire senior class showed up in the library, and then we started hearing the clocks go off.
They were *very* clever - they'd obviously gotten someone to let them in later in the evening or very early in the morning, and had had access to a ladder, because they'd gotten a few in the removeable ceiling tiles, one on top of the hanging artwork goose (flat back: they'd gotten it just between the wings) plus a whole bunch of more obvious places - desk drawers, under the library step stools, behind and on top of bookshelves, etc.
We kept finding them for about a month (every day, something'd go off, and we'd track down the closest ones we could isolate), but there were several that never went off, and I still find occasionally.