Alright, here's a proper Nostalgia dump in chronological order.
Ent build competition
Meduseld build competition
Edoras build day w/e Jesse Cox
MCME's contribution to Jesse Cox's build day
Classic hungergames
I used to take screenshots at the start of all my tours. This is the first screenshot I took of a tour I ran.
It used to be possible to stack on top of people's shoulders
River dig
What tour's used to look like
Dragon over Hobbiton to celebrate first Hobbit movie
First day of the first Great Lore Tour
Second day of the first Great Lore Tour
Third day of the first Great Lore Tour
Golden age of guides [Not all Guides included in image]
'The Walls' with a custom map
Map of Middle-earth made of wool on the freebuild
Easter Eggs
Horse mount donor rewards
State of the staff (not all included) in January 2014