What to do with my Collection?

[hth]

I regard the Time module truly iconic.

HP-IL, Wand and perhaps Extended I/O module. Advantage module and IR-module, the two late modules from HP.

82166C, the prototype kit for HP-IL with components and development module.

If you have an early MLDL product, that could also be considered.

For history, a memory module and quad memory showing how it progressed.

A rugged case?