Certain visual effects for passive shards are much too obtrusive. There are a number of mods that try to address this, but generally they're very much directed by the author's specific desires. I aimed to make multiple options for different peoples' preferences. I have three versions of this mod currently and can make more combinations if requested: 

• Quiet Teps Oceus, No Money is Power, No Detective Eye
• Quiet Teps Oceus, No Money is Power, No Detective Eye, No Regeneration
• Quiet Teps Oceus, No Money is Power, No Detective Eye, No Regeneration, No Words of Wisdom
  

Please note that there is a minor gameplay effect to how I implemented the Detective Eye change -- I attempted to simply disable the visual ring, but this resulted in the pickup effect failing as well. Inspired by wgnwaugvwh's mod, I opted to instead expand the ring beyond the visual boundaries of the screen. This results in the Detective Eye properties -- both the pickup and wall revealing effects -- to apply to the entire screen. A boon, really, but just so you're aware that the mod does make a small gameplay change. 
Also swaps out "Teps Oceus" voice line for a more generic voice effect -- in this case, I used the "Heavy Weapon" effect for a bit of variation. I can likely mute or swap out lines for other shards if needed, or if you'd like a version of this mod without the line changed, please let me know.

Installation instructions: 

• Extract the file contents
• Copy ONE (1) of the files within the folder to ...\Bloodstained Ritual of the Night\BloodstainedRotN\Content\Paks\~mods
  Note: You may need to create the ~mods folder
• Start the game and enjoy! 
  

To uninstall, simply delete the file you placed in the ~mods folder.