In the old days, I did - there must be half a dozen FT'ers who can
tell who I have sent them certs in the past ( one I recall was Boy are My
Arms Tired).

I have also occasionally offered UG's to people on the same flights as me-
can do so for anyone on PEK-YYZ Jan 31, YYZ-ORD 7:00 AM Jan 16,
YYZ-PBI Dec 26.