Yes, we know these have a wide variety of uses.
...they also hold small things really, really well! That is why we are stocking these at SpaceCat Design. Currently available in 2ml size, we are anticipating other sizes coming very soon.
Each order is for 1x Silicone Storage "Jar" -- the colors will be chosen randomly, unless you wish to ask for a specific one in your order notes. We won't always be able to give you that color, but if you ask, we will do our best to find that one for you.
These are often used in our Build Videos on YouTube to carry SMD items such as diodes, reset buttons, etc.
Keycap in photographs is for scale. This size will not hold a keycap. Stay tuned for larger sizes arriving at the SpaceCat Design offices soon!