This specifies new rotation angles for many different items from the game, as well as items from over 100 other mods, to make sure they look nice in the hotbar (Using the built-in overrides system RuntimeIcons has).
Here's a quick example of these new rotations:


I've set up a wiki page listing out everything i've added item rotations for, including the version number of when I did it. If a mod has updated adding more scrap items that I haven't covered yet (or if you know of a scrap mod that i've never seen before), feel free to let me know in the modding discord.
In terms of other icon RuntimeIcons addons, there's HoneeItemIcons which features very nice digitally drawn icons by Honee & BetterRotations_NoMiniIcons, which is a way to remove the "special item" mini-icon that's been applied to certain items from Wesley's Moons, Archipelago Scrap, and a couple others.
Additionally, if you're the creator of a scrap mod & would like to use any of my icons in your mod directly, just ask and i'd be glad to hand them over.
[Images coming soon bc i too lazy right now]
[Images coming soon bc i too lazy right now]