Very nice entry! I managed to find the cookie a couple of times (once on the 2nd locker opened!) The only bug I encountered was when I went back to the title screen. Another instance of the music would start over the existing one, each time you decide to go back to the menu.
Apart from that, great time killer of an entry!
If you've got some spare time, come try and rate mine! 7 endings to find, hilarious narrator, worth checking out!