The OP's pic looks like a candy bin :-)

For vintage I mostly use quill and toe clips.

Though for an older tandem and 80's era Trek tour rig, I have the Shimano dual platform SPD (I think called M324??). Available in chrome or black cage. They look marginally appropriate on vintage but excellent wide support and retention for all around use.

For me and getting the whole vintage cycling experience is much about the old parts.
Quite sure I'm slipping when I seek-

old toe clips, INCL. old leather straps / clasp
old brake cable sheath
old spokes
even chasing nice NOS vinti clinchers and tubulars
....... and finally, old cloth handlebar wrap

cheer's