I know this is an old topic, but if you go again next year, Go for the vintage equipment! I don't know how much you know about HF operations, or electronics, but the boat anchors are always fun to restore, use, and collect. like another person said, parts and connectors too. grab a few odd power connectors, different style mic plugs, all kinds of obscure stuff. One day, you'll need them.
My only warning, if you buy ANY piece of TUBE type equipment, DO NOT STICK YOUR HAND IN IT. Unless you know what your doing, and have discharged ALL HV caps. Receivers can have hundreds of volts lurking around in there, enough to give Technicians Elbow!
( where you bang your arm on something while pulling away from the shock). And TRANSMITTING equipment is worse, with voltages in the 2-3 KV range. That'll throw ya across the room! And like I said earlier, discharge all caps. Google B+ voltage.
Don't let all that scare ya, Vintage radios are fun, but do require alot more caution.
(P.S. That Tech Elbow sayingis alot older than me.