Last year I was in a teaching position where I was supporting brand new teachers to the field who were interning and getting their MA degrees in Special Education. We had 19 2nd year teachers and 20 1st year teachers. I put together "goodie bags" for each teacher which included a bottle of glue, a box of crayons (5 cents each, I think -- the crayons may have been 20 cents), a package of eraser tips (5 cents), a pencil sharpener, a package of pencils, a ruler, and a pencil box (all 1 cent unless noted otherwise). There may have been something else in the bag as well, but I can't remember. I put them in clear cellophane treat bags. I figured it cost me about 15 or 20 cents per bag plus the cost of the bags (which was more than the supplies!). I also bought gobs of folders and left them on the table during the orientation for them to take what they needed.
Oh, even though I could purchase 30, I'd buy my 30, take the stuff to the car and then go back in to get more. That way I had enough for everyone with extra left over. I bought a lot more of the folders though.
I can't wait for the sale. I'm back in the classroom with kids this year!