black sack
Dark ark is a Hink-Pink for Noah's boat with the lights off.
A hink pink for a sack for Old Glory would be "flag bag." It's as simple as that. Just combine the words for the items and you've got yourself a hink pink. Next!
flag bag
flag bag
Bag tag is the hink tink for a label on a paper sack.
Flag bag.
bag tag
bag tag
dark park
black crack
Yes, a hink pink for "dark crevice" could be "gloomy groove." Both phrases feature a dark or shadowy description followed by a similar sounding word with a different meaning.
tan man, Dark Mark