Military-inspired weather-resistant container, with a 21mm inside diameter and customizable height (see customizer).

UPDATE 2025-02-06: For a more customizable model based on this design to include inside diameter, height and interior expansion, and O-ring options, see "CHUNKY 2 - REVENGE OF THE CUSTOMIZER" https://www.thingiverse.com/thing:6930824

Designed to use the following optional o-ring:

15/16" (23.8mm) inside diameter x 1/16" (1.6mm) thickness,
American Standard AS568 #21
or
Danco #33

Threads can be lubricated with paraffin, petroleum jelly or lip balm.

Things you can store in these containers:

1. toothpicks
2. matches
3. cotton swabs
4. birthday candles
5. dimes or pennies
6. not drugs
7. needles and pins
8. very small aircraft
9. chopsticks
10. pencils or pens

If you can think of anything else , please let me know in the comments.