YOU ASK, I ANSWER: Reader Robert Sapp writes: “I’m about to start my Christmas shopping in earnest. Could you give your recommendations again on remote control helicopters? Thanks!” Sure. This is the one that so many readers bought and liked. And here’s a post with recommendations for fancier ones.

UPDATE: A reader — I’ve omitted her name to avoid spoiling a Christmas surprise — writes:

Bought one of those helicopters for the son-in-law for Christmas this year. Played with it.

Ha ha!

Now I have to order another one — for my son-in-law.