Going through my box of electronic junk i found few motors and printer rollers. Few hours later this is what came out. It is basic junk bot which follows the light. Currently, power output is too low and it is not quite mobile :) Light following is working ok. I have used two photo transistors which are connected to LM386 and depending on output of either left or right transistor, corresponding motor got's output.
This is a companion discussion topic for the original entry at https://community.robotshop.com/robots/show/junkie-stick-bot