Micro Explorer prototype set showing all parts - The kids we tested the prototype with went a little nuts, searching for bugs to squash and look at, or dumping out salt shakers to look at the cubical crystals.
It was a little scary. Guess we should have checked to see if they had eaten any candy bars before the test.
But, they really liked the toy, and it was selected for production. Unfortunately, I left the company at that point, and I was not able to design the production toy, which is why it looks kinda...well, um, chunky.