Today I learned that while difficult you can get to the I am error room in the chest

Method to above while in a crawl space(mine was generated by "The world?") if you manage to glitch or build enough speed going downward(I did it by accident going downward too fast while having Pluto) you can slip right through the floor and poof you are in an I am error room complete with void portal

Related bug: If you use the above method to get into an I am error room, and either have blank card or another "The world?" card and re-enter your crawl space from the I am error room, when trying to exit the crawl space you will just re-enter the crawls space, trapping you unless you have a way to teleport back out or break back through the floor into the I am error room.

Unrelated bug: If you absorb the glowing hourglass with the void and have the battery, while at full double charge, if you use the void it will consume both uses of the void and leave it with no charge.

Conclusion: I play this game way too much.