The three gadgets that will be hardest to find this holiday season

Stores are already starting to offer deals on TVs, Amazon Echo speakers, Amazon Kindles, Sony PlayStations, iPads, and other electronics that kids of all ages would want to see underneath the Christmas tree.

But the most desirable gadgets this Christmas won't be easy to get.

They probably won't be available in stores, unless you line up in the early hours of the morning.

This season, some of the most interesting electronics - from companies like Nintendo and Apple - will be incredibly hard to buy, in short supply, and will require queueing up, or getting into an Ebay bidding war, or knowing someone who works for Apple.

Here are the three rarest electronics gadgets that you probably won't be able to find this Christmas: