I took serious inspiration from https://www.thingiverse.com/thing:5673451 but I redrew the whole thing so I'm uploading it as a stand alone. I wasn't able to find any tool holder for people with the Reality LED light bar. This only engages the T channel in the back and leaves room for the wire.
Ender_3_v2_NEO_Light_bar_Tool_Holder.stl | 3.5MB |