Anyway, I had a thought for a use of one. I am always wanting to doodle, but never have the right stuff on me or nearby. And so came my Altoids tin doodle pad / pencil case.
I went by a rule of threes for my stationary, so I had 3 pencils, 3 pens (okay I killed one so I needed to make another once I got one) and 3 rubbers.
Without further ado, here we go!
Step 1: Pencils
Anyway, sharpened, these 3 mini pencils fit perfectly into my tin.
Step 2: Pens
To tin-size one, saw the plastic casing at the right point (just check it against the tin), and cut the ink tube with scissors. Hold on to both sides when doing this . Tape over the end (not the nib end) to stop ink leaking. Rinse and repeat.
I would advise you listen to my methods.... I killed the first pen and had to go buy another.
In with the pencils they went.
Step 3: Rubbers
If I had to make some however, I would take one the thickness of the (bottom part of the) tin, or thereabouts, and saw it into three appropriately-sized pieces.