Uses for Glow Ink Sac

Currently, glow ink sacs are a pretty useless item. They were added as the drop from a mob vote winner, but they still serve little purpose. No matter what you think of the Glow Squid itself, the glow ink sack barely provides any reason for the player to interact with the squid. Maybe its lack of uses feeds into Mojang's wish not to encourage players to kill animals, but the squid and the ink are already here so please consider more uses for said glow ink. The 'glow' doesn't necessarily need to emit actual light, so much as just improve building/style options. 

For example:

• Used to make banner designs glow 
• Used to make armour trims glow, either when worn or on armour stands as decoration
• Used to make pottery sherds glow when placed as a full pot, allowing you to highlight your favourite archeological designs
• Used to make Glow Ink Torches - This is the most far fetched suggestion, but they could be used to light areas underwater, where the glow squid itself lives, without breaking. This would thematically fit the new Nautilus drop's focus on underwater movement, survival and base building.