You should still have his S-mail address. Drop him
a card or a letter
explaining the situation and ask for his phone number and/or E-mail
address. Once you have that you should be able to arrange to get the stuff
back to him.
I don't even have that, last time I spoke to him I recall him saying he
moved, since then I have wiped my email numerous times, and his ebay address
is outdated. I am stuck.