[masraum]

Good stuff! I had an HP 35SII until sometime in the last 3-4 years, then a battery leaked into it and killed the display. I was and still am very bummed. It was a Christmas present from 1989, and my absolutely favorite calculator ever.

When I was a teen, my dad brought home an unused slide rules from work (mid-80s). He showed me how to use it. I thought that was the coolest thing. I still have it. It's on my desk at work.

I've also got several Japanese abaci, and I know how to use them, at least for addition.

I also had my packet full of drafting stuff from college (1988), although it was a cheap college packet.