I've got three, four... a half-dozen (I don't recall) mechanical pencils, and a bunch of leads, from back in the day when we did software design flow-charting by hand. Haven't seen use in years, and years. I've also got two-and-a-half Staedtler white vinyl drafting erasers (from back in the same time-period). So I suspect I'm pretty well set for pencils and erasers
I've even still got my old HP 15C calculator. (Good ol' RPN. Can't beat it
) Batteries are dead, but that should be no problem.
Thanks for the other hints and tricks, guys