IR controlled robots

Hey guys,
I’m new here so I apologize if I’ve posted this in the wrong section or anything like that. Anyway, I’m working on this project for RoboCup involving “citizen” microrobots. For those of you who aren’t familiar with these robots, they are basically pretty small IR controlled robots. Here’s a link to the competition and what the robots are specifically:

The problem I’m having is that these robots won’t be sent out to the teams for at least a month and so I need to find some robots to substitute for them in order to test my code and start playing around with them. I’ve looked around and I can’t seem to find anything right so I figured I would look to you guys for some help. My question to you guys is if you know of any robots for sale that are about the size of the “citizen” microrobots and that are IR controlled. Thanks.