I could bring homemade vegetable soup. A parsnip, lingering too long in the fridge, a withered leek, an out of date packet of barley, retrieved from the food recycling caddy. Used teabags + assorted leftovers in the caddy-liner will add a "je ne sais quois" to the taste. I'll be generous and not sample any myself.  

What I won't share are tins of fish (supermarket brand) or my sole packet of Warburton's Thins; they are mine, all mine. 
I'm bringing Simon and Garfunkel LPs. We can listen to 2 songs, "I am a Rock" and "Old Friends".
                            I am a Rock  
"I am alone
Gazing from my window to the street below"
  ...
"I've built walls, 
A fortress deep and mighty
That none may penetrate"
 ...
"I have my books
And my poetry to protect me.
I am shielded in my armor,
Hiding in my room, safe within my womb,
I touch no one and no one touches me"
"I am a rock. 
 I am an island"
                              "Old Friends" or "Bookends"
 "Old friends
  Sat on their park bench
  Like bookends"
Simon Armitage, Poet Laureate, has just read a poem for the times we're in on Radio 4 at the end of "P.M."