I saw a challenge like this some time ago, but couldn't find it, so...
Simple challenge, simple rules:
Your task is to construct a vehicle in Kerbal Space Program that utilizes no more than one of each part. This means engines, fuel tanks, struts, you name it! Only one of each allowed.
The goal of this challenge is to see what you can come up with under these restrictions. Will you be able to create a space station? A Comms system? Or maybe you'll visit Jool, or Eve, or (God forbi