I have always found the boxes full of "tat" a great morale boost when in my little hole in the sand, be it from my family or a member of the public. It's amazing what HP Sauce, sweets, shower gel etc can do to make life a little more pleasant (Point of note - Chocolate is a bad idea in summer - you end up opening a congealed mess)
Oh dear, I mentioned the word morale didn't I........................