Simple box, room temperature, it has white walls and no furniture.
It's a dark forest with one tree. That one tree is rather small too.
The trail goes on to the right of the one tree. It's fairly distinguishable from all the other dirt.
It's a very vast stretch of water that looks to be made simply of metal.
It's a test tube full of a mysterious blue liquid.
The key is a long, pointed peice of metal, cold to the touch and with far more luster than anything else I've seen before.It is utterly smooth save for the one point at the end. I'd say that it unlocks reality.