Take I-4 to exit 45, start heading east on Fairbanks, and look for the building with the UFO on top just as soon as you clear the interchange. No trip to central florida would be complete without a stop at Kennedy Space Center. The best surplus place so far on this list. Must be seen to be believed. Rows of 16 foot high shelving with moderately well organized parts, piles of stuff everywhere, and back lot for the big stuff.
Prices are high, however.
Recent electronic surplus parts and stuff, well organized. They do mail order, too. See description above. At the Chino Airport. March Air Force Base museum.