I bought small plain chinese takeout boxes from RM Box Center that Marian suggested (thanks Marian! It was a great help!) I just assembled it and put spooky halloween border and trick or treat tag that I printed out from the computer. I then put black ribbon as handle and filled it with assorted candies and chocolates.
Finally, I sealed the top with a Jack-o-lantern Happy Halloween clip art greeting (also from the net). Here's a closeup of the treat boxes. I hope his classmates like it.
TFL! Happy Halloween everyone!