minim
noun;
1. the least quantity of anything.
2. the smallest unit of liquid measure, 1/60 of a fluid dram, roughly equivalent to one drop.
3. Music. A note, formerly the shortest in use, but now equivalent in time value to one half of a semibreve; half note.
4. Something very small or insignificant.

Taking influence from the 'least quantity' I drew this using one continuous black ink line only - and in true Doris style is wearing something small / insignificant ;)