Can you update to version 1.19.4 or other latest versions, this little plugin is really important for players! !

The idea is brilliant!
You could improve this by:

1. Shortening the height between the chest and particles. Right now it is hard to identify the right chest when you have a room with stacked chests, the particles of the first chest lets say, float above the second chest on top. Maybe make the particles at the same level with the right chest and translate them in front of it?

2. If you wheel scroll to another item in your hotbar while holding shift the particles do not update according to the new selected item.

Otherwise, the plugin is great!

Nice job!

Good plugin. But when I crouch, when I hold nothing, particles also appear. Everything else is ok.