Wow :!: To pick just one is way too tough for me to do, so I will give my fav MOC and boxes item from each era;
SW, has to b the 12 back Luke-the most iconic of all MOCs with that scene of Luke looking out to the horizon 8)
Prob the Palitoy Death Star play set-just an amazing creative set 8)
Empire, has to b the Palitoy 30 back A Luke Bespin. The walking photo used only for the 30A/Kenner 31 etc is just great-far superior to the revised looking photo used for all other later carded examples. The 30A tops it for me with the beautiful Palitoy logo and the back of a 30 back is my fav back of all MOCs, that wonderful blue background and the first 10 Empire figures all prototype-just stunningly beautiful 8)
The AT-AT tops it for me regarding boxed vehicles. As a kid I was just in awe with the size and depth of the box and the lovely diorama pictured of IMO the best vehicle Kenner ever did
Jedi, Luke Jedi. Caused such a buzz amongst us kids when it came out and as said the picture used on the card is superb 8)
The Jabba the Hut creature play set is a personal fav because there is great nostalgia there. I have great memories about being so excited when it came out and trying to find it in my local shops which was v hard as it was sold out/not available at many early on :!: