Concept: “23 new eyeballs. You know, in case you lose one and need a replacement.”
Content: Ocular alternatives with a wide array of special features
Writing: Short and concise descriptions with grim character
Art/design: Original illustrations of each eyeball in easy-to-use layouts and stylish designs
Usability: A clever, thematic alternative to generic rings, amulets, etc.

Concept: “The mages glance to a paradise that was never made for the mortals of this world, so they have to adapt for it.”
Content: Lore and stats for eye mages and the bizarre wares they peddle
Writing: Overtones of alien and body horror
Art/design: Tons of twisted eyeball-based and beholder-inspired artwork
Usability: For PCs, potentially beneficial friends and potentially dangerous enemies