Void fragment + 10 dragon blood = Reptile slayer pet treat.
Void Fragment + deamon claw = daemon slayer for pet.
Etc for each slayer type.
To stick with there name and shape:
8 void fragments planted at a Shrine brings up a void inspired shrine battle with new rewards.
A new title instead of Honest etc.
Reward idea:
New shirts and pants designs that can be transmogged onto chest and leg armor.
Could include a peg leg style pants.
Agree that we need more items to craft using the void fragments. I would also ask that they make them stackable so they don't take up as much room when collecting/storing them.
I'd suggest that the team adds another recipe (or two) in Pub 122 "Egg Vendor" that gives us the items that use void fragments. I'm a big fan of the recipes we've gotten that use pre-existing but still obtainable artifacts (ie Cuffs ) because it gives people a reason to do that older content. My suggestion would be using a void fragment / dark father blood / tunic of fortune to make a new "Lucky Void-touched Tunic" that gives 10 mana / 20 LRC / 8 LMC / 250 luck / +15 each resist (medable).
One for gauntlets. 5 SSI and more.