Lemon juice sprayer/container
I personally use squeeze bottles to store my citrus juices, including pre-strained lemon juice.  They're nearly identical to these versions from Amazon (though more colorful) which I like because they have a built-in cap to keep the container sealed.  There are a number of other styles sold, but know that most don't include caps.  The small tips make them easy to dispense precisely; give them a quick squeeze over your food (or even wave them around and let the drops fall where they may) and you'd get controlled, relatively even distribution.

I wouldn't recommend them for long-term storage, as plastic can mess with flavors over an extended time, but lemon juice gets acrid after a week or so anyway.  You could try out a spray bottle, but these have minimal moving parts and they're dishwasher-safe.