This tutorial explains how to create a real Extended Banner for a Nintendo 3DS homebrew CIA: a banner containing a rotatable 3D model, an optional looping animation, a screen-facing logo, custom materials, and sound.
The workflow documented here...
I already have CTGP Deluxe and Pokémon: Luminescent Platinum set up with custom icons on my menu. Are there some other cool mods for games? It can be every title.
Downloads for SRL (Single ROM Loaders): https://gbatemp.net/threads/my-collection-of-single-rom-loaders-for-some-best-wii-homebrew-emulators.591509/
Edit; actual guide is here...