[TchrFvr]

...who would suggest that you tell the principal all about it, starting with your book and movie and progressing to the blanket at Christmas, and ending with how long you've been doing this and how special and meaningful it has always been to you and to your students. It is, as a previous poster said, very disrespectful to you that the other teachers would steal (yes, it's stealing!) your wonderful idea and wonderful lesson for your kids. If you explain the whole sequence, I think any principal worth his/her salt would let the other teachers know to pick another project besides a blanket.