Tektronix Company Store

The Tektronix surplus store is storied. The company has declined from its lofty peak. Probably the store.
Now their surplus store is open the first and third Thursday of the month from 2PM-​4PM.
From what I have heard a line forms about a half an hour before they open. They have Tektronix and other test equipment. The prices are reasonable, but you will need to bring whatever is required to verify it works.
They have huge numbers of BNC and test leads as well as microwave connectors and waveguides. Hand tools, surplus wire. Office chairs, desks. old books, old software, PC parts.
Their electronics surplus is narrower than, say, Surplus Gizmos, but it is more focused on Tektronix test equipment. Their selection of PC parts is similar but smaller than Free Geek at the same price. Some things like ATA cases are very reasonable.
To find something specific, you might have to go early and go often. But it might be worth a visit just to see the curiosites. Kids who are interested in junk shops might enjoy.