I'm not much of an artist (sure, I can imagine complex toy designs and the final product always comes out as I imagined, but I'm not very good at getting what's in my head into drawn form
), and I'm not a pixel-artist, either, so I hope that something doodled on paper works for a submission!
I've gone with the Lemmings referencing and the demonstrating of skills that were both mentioned above, and I came up with this concept;
The blank cards are for various options, naturally, and I'm quite happy with how I worked in the Cuber and the Batter, too.