U know I know this is super off topic but I just came across this guy who made like the worlds smallest edf jet (10 mm) here it is.
And he made this in like 2012 and looking at his thread and some of his electronics he made the receiver and servos himself (pretty sure) which is extremely impressive he even made the propeller,edf and motor himself which is crazy. I hope one daughter im able to build something as small as this thing because when I first got into the hobby I actually tied making a tiny airplane like this one and it was a disaster it is super hard to get something of this size flying !