I have a couple ideas for contrivances and contraptions.

I have two new proposed contraptions. One would be a toggle switch for locking doors. When activated it switches the lock status of a specific door from locked to unlocked or vice versa. The second would do the same thing except it would be for all doors in a room.

For the contrivance, I propose every time a player enters a place after a natural new day this contrivance will pass.

Isn't the toggle door lock idea essentially just a combination of the Lock and Unlock Door Contraptions? How would this be useful?

A Contrivance to test for New Day though, I can definitely see a use for that. So a vote from me there.