Is this supposed to make any sense?

By now you should have seven items in your inventory right? And don't the green squares remind you of the houseplants? Hmm... maybe we need to think back on our journey...

yeah, the only thing I noticed was the 7 slots looking like my inventory. Everything else doesn't make any sense at all... How would squares remind anyone of houseplants?

Since it was impossible I just edited the source code to accept anything. I'm glad I didn't waste more time on it, hah

Aww... that was the creator's best trick imo! Anyways I remembered finding the lighter between two plants, so I knew the lighter represents 3. Basically you just needed to go back and recall the LOCATIONS where you picked up the 7 items.