I have some ideas for a doors pack and here they are:
Locker Door-this door looks like a school locker. When you open it the lock spins and the door flys open. It's just the door. There is NO LOCKER BEHIND IT! It's just a door. It comes in 3x3 and 3x6
Dumpster Passage-A giant dumpster that when open reveals a huge hole beneath it that you can dive into.
Secret Passage window- (I don't now if it can be done)
Its a window big enogh to be climbed through, but you can't see bricks on the other side of it.
Revolving Fireplace-A large fireplace that when opened, a statue on top flops down and the fireplace does a 90 degree turn so a player can walk through it into a passage behind it.
Slidig Portrait-A portrait that when opened falls down leaving nothing but the frame and a hole behind it. allowing access to the area behind the painting. (could come in different varriations with different pictures)
If you make these please post the link for me. I will love you for ever.
EDIT: here are some more ideasBookcase Passage-same as the fireplace one only its a book case.
Sliding Mirror-same as the portrait only it's a mirror
Portkey-like in the fourth Harry Potter. When opened the portkey (which looks like a boot on a base) disapears and the player falles into the hole below.
Attic Door-It looks like the bottem of a brick but when activated falles down to reveal a stair case.