Eyebrows - use a toothbrush to brush 'em upwards and yank out any that are too long (or cut with scissors if you're squamish). And if they meet in the middle, Gallagher-style, just pluck 'em out. I've been ripping out rogue eyebrows since I was 14 (in the privacy of my own bathroom, of course) and it's actually quite satisfying (sorry, probably rather more of an admission than you'd want!).
As for moustaches, if you want to wax, use the proofing wax that comes with waxed-cotton jackets if you don't fancy trying to track down some moustache wax.
On the subject of nasal hair trimmers, you just know that it's one of those gadgets you could leave lying around and no-one, but no-one would ever ask to borrow it!