I had wanted to do this a year + ago but now its here, the ability to place a custom image for bullets
This is a theme component and replaces all bullet points in the selected theme
Here’s how mine look
I placed the component here
https://github.com/RobertFULL30/Discourse_Bullet_Images.git
Once installed you can edit the photo url and dimensions to suit,
this is both desktop and mobile so edit both to suit
transparent .png is recommended to sit on any color background
the bullet image included is courtesy of
And I do thank the Discourse team for always helping when needed 
Enjoy!