These challenges are TOTALLY open to interpretation. As long as you can justify in your mind how your page fits the challenge, it's totally fine with us. These challenges are supposed to inspire you. We aren't in the business of trying to disqualify people.
So using some of the examples above: messy/clean - You could do a literal page of a messy room vs a clean room (or messy/clean kid or whatever), or you could do something like half your page is messy and the other half is clean, or any other way you interpret the challenge is fine, too.
Same with pumpkin spice... if you don't like pumpkin spice, you don't HAVE to scrap about starbucks. LOL Scrap a trip to the pumpkin patch, the color orange, a general fall page using pumpkin elements.
Just take these prompts as a jumping off point and let them inspire you. I promise you, as long as there is a connection in some way to the prompt, it's TOTALLY fine.