For Amiga? Hmm...
The A1000 stuff, despite the "Attic" marking is my best. Has all the polys, little read-me first type intserts, quick setup guides, etc. The monitor even says "Seller - you must register this monitor with the EPA. Do not sell to a consumer with this tag attached!"
For Atari, I have a pretty good XEGS.
I *had* the original box for a NorthStar Horizon, but it was water damaged when I left it outside in the rain...
Who'd have thought it would rain here? In Seattle?