Poste Restante

[Jane]

Reading through La Poste's website again,  it looks as if they will hold your items for 15 days. I imagine they'll be turned into an offering at the shrine of Marianne after that.
You'll need a proof of identity when you go to collect.  When dealing with French bureaucracy,  I find a combination of passport,  driving license,  hamster's birth certificate and inside leg measurement of one's maiden uncle usually does the trick.

 We have all this to look forward to