My son loves this cart and wants me to make a LO for his scrapbook. I am pretty much done doing LOs but since he asked I thought I would try to come up with something for him. Here are the robotz - that is as far as I have gotten as of right now.
The tummy opens to reveal some spare parts the robot swallowed (they are brads). Used Copic Markers to make his eyes and tummy a few shades darker than the aqua paper. The dino robot on the right has some Tim Holtz gears attached via brads.