Glow ink sacs, which are used to produce glow item frames and glow signs, are the most valuable resource. These glow ink sacs can be obtained from glow squids that can be found in the deepest part of the ocean.
We recommend that you make potions of water breathing, or an enchanted headgear with a respiration enhancement of one or two. One nether wart and one pufferfish can be used to make a potion of water-breathing.
You will need to first find the book to obtain the enchantment. Next, you can use the book in either an anvil (or enchantment table) to gain it. Additionally, we recommend purchasing a sword with the loot 3 enchantment and water breathing potions, or an enchantment head.
This is because without the lootIII enchantment you will miss out on an increase in loot rate for the Ink Sac of 6. Instead of a maximum of 3.
This is the last step. Now you can go glow squid-hunting. We recommend building a boat, and then finding open water. After you have found a squid, you can use the scac to make a sign or a frame.
How to make an item frame that glows in Minecraft
Make a frame to hold the glowing ink sac. Next, place the item frame on top of the crafting table. Once you have your glowing item frame constructed, you can use it as a regular item frame but it will glow in the dark.
How to create a glowing sign for Minecraft
You can make a glowing sign by simply placing a regular sign and adding text. The glowing ink sac can be placed in the hot bar. This will illuminate the text. You can change the color of your text by getting some dye and right-clicking the text. This will make it glow the desired color.