This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/5VdQVqhessH
Inspired by this LED Bracket by https://www.thingiverse.com/Funny62 https://www.thingiverse.com/thing:2687367 which works with the "Mistral 2.1" Extruder Cooling Duct for the Anet A8 Printer by Leo_N, https://www.thingiverse.com/thing:2121279 - which was my first successful print.
And this sensor bracket by chelrix, https://www.thingiverse.com/thing:1874774
Thank you to you guys for sharing your mods - which both use the lower fan fixings, so this is a merge of the sensor bracket, the LED bracket and fills to join the whole lot back together in the neatest possible way, its my first Tinkercad model so lets see how it works.
Subsequent testing and fitting showed there's a few errors in the design. So use this one..