A while back I visited the HP Labs building in Palo Alto, and in it are the two side-by-side original offices of Bill Hewlett and Dave Packard, the founders. The offices have been preserved just as they were when the two retired, complete with naugahyde furniture, wood panelling, and desk blotters.
Click on the pictures for larger versions.
It became a tradition for world-traveling HP employees to leave coins on Hewlett’s desk.
Here are some great pictures of the original HP garage also.