When a Compass is in the player's inventory, a HUD overlay will be displayed on the corner of the screen! This is also configurable to where you don't need it in your inventory too!
A variety of the new tooltips you'll find on items with this mod!
When an unnamed Clock is placed into an Item Frame, it will display your current world's time and day above it while being hovered over!
The Environment Detector is a handy new utility item crafted from 4 Copper Ingots and 1 Redstone Dust that will display information about your current biome, as well as the weather!
While playing a Note Block, the current played note will be displayed on a HUD overlay without having to look in the F3 menu!

Simple improvements to Minecraft's GUIs and the way information is displayed!