Hi. I'm a fan of your resource packs.
I had some ideas/request for glowing items. No very originals though:
-glow ink sac (item)
-glowing fruit (item)
-glow squid egg (item)
-glow item frame (item & entity)
-Brighter quartz block.

Those are the ones I can remember. I want to play survival so didn't want to spoil myself too much.
Thanks for reading :)

Amethyst Shards and Blocks, as well as Deepslate Ores would look good too! Along with some of the new Blockus blocks added in recent 1.17.1 versions