Post Cereal Offering Small PDAs

I noticed last night in the grocery store that Post is offering a Personal Digital Assistant for 2 UPCs and $1 for postage and handling.

The offer includes the following products:
Fruity Pebbles, Golden Crisp, Cocoa Pebbles, Oreo O’s, Honeycomb, Strawberry Blasted Honeycomb,Waffle Crisp, Alpha-Bits, or Marshmallow Alpha-Bits.

I'm not sure what type of PDA this will be, but I'm curious. I would like to collect these small devices for the gadget seminar I teach. I'm trying to see how many of these PDAs I can order. If you eat these cereals and would not mind letting go of your UPCs, could you contact me at cybrarian01@yahoo.com? Thank you.