From 1999-2006 these pictures of official alt builds were included on the box or instructions, I can't seem to find them all in one place online and the older ones are very
Custom Instruction 10255 Assembly Square Alternative build – Lego Instructions – MocsMarket
1x Lego Wardrobe Alt-Hell Grey 2x2x2 Container Box Door Empty 4346 4345 | eBay
LEGO Set 21161-1 The Crafting Box 3.0 (2020 Minecraft) | Rebrickable - Build with LEGO
1x Lego Technic Battery Box 9V Defective 4x14x4 Alt-Hell Grey Box 2847c01 4059632291214 | eBay
LEGO 4+ Classic Medium Creative Brick Box Set
Lego Box Alternative Models Archive | Flickr
Large Box of Classic LEGO 4+ Creative Bricks
1x Lego Wardrobe White Alt-Hell Grey 2x3x2 Door Left Box 4533 4532a | eBay
Lego 6957 - instruction of alt. model C from back wall of the box building - YouTube
Castle Archives - Back of the Box Builds
1x Lego Car Box Container Alt-Dunkel Grey Set Racers Xalax Shredd 4570 30556 | eBay
1x Lego Wardrobe Red 2x3x2 Door Alt-Hell Grey Box Box453221 4533 4532 4059632028889 | eBay
