In case you need to carry pills around, this container can hold a couple of pills in their blister pack (i.e. unopened). Standard and keyring versions, both share the same white cross slider / retainer.

Note the keyring version is harder to access pills as will need to be removed from keyring to open.

Print in green and white for the first aid look.

UPDATE. Added new keyring version upper case that can be used with the standard bottom half. This is stronger than the original and the case can be opened without removing from the keyring. This version needs support to build plate.