After-dark convenience, 8 letters
Illuminator in a shirt pocket, perhaps, 8 letters
Illuminator on a keychain, 8 letters
Keychain illuminator, 8 letters
A small flashlight resembling a fountain pen, 8 letters
Compact illuminator, 7 letters
Handheld illuminant, 7 letters
Pocket illuminators, 8 letters
Slammer sluggard?, 9 letters