@AnnonomusPenguin ... if I want to hurt someone bad enough that I would resort to using a plastic knife, then you taking away the plastic knife will do nothing to curb that desire.
also, it gives the advantage to the kid who comes in with a real knife someday, and all anyone else has is spoons and a cellophane lunch bucket.
So, plastic knives are off topic (that is, unless @hichris wants to make a meat cutting machine with plastic knives). @hichris: what's the assignment, again?
@Undo I think most off-the-shelf RFID chips don't have that long of a range for a doorway
@hichris Welcome to Charcoal HQ! Are you looking for something really cool? Useful? Easy? Difficult (to impress others)? Glass integrated? etc. Please edit your question to include more details. Thanks!
Really: one thing I've been wanting to do is make one of those light alarm clocks that wake you up by slowly increasing the light in the room. Do a 10x10 array of RGB LEDs and find a pattern online for a simulated sunrise and you're golden
Add an actual buzzer to wake you up if you don't wake up on time
@Undo Well seeing as kids have been suspended for arriving with a "gun shaped" pop tart and arrested for playing with baking soda and vinegar I wouldn't be surprised..