What about incorporating a small solar light inside.

Pick up a light from the "Dollar Store", hack it up and mount the solar panel outside.  If you get several, you can increase your "run time" by combining batteries or just have more light.  Those things usually run for several hours, which should be good enough for the evening people (after all, who's going to be looking for a book at midnight?), so no need for a switch.

Great cause!  Good Luck.

-Dick-

----- Original Message -----
From: T Collins <tonycollin@GMAIL.COM>
To: vanagon@GERRY.VANAGON.COM
Sent: Tue, 05 Dec 2017 09:44:45 -0500 (EST)
Subject: Re: Anyone use pressure switches to light up westy cabinets?

Can you see this? Was the question archaic?

On Tue, Nov 28, 2017 at 12:01 PM, T Collins <tonycollin@gmail.com> wrote:

> Hello all,
>
> I am looking for your technical advise on a project. Our family recently
> put together and inaugurated a Little free library. Link for those of you
> that may not know what these are--> https://littlefreelibrary.org/
>
> Anyhow, I realize that at night people passing by cant see inside the box.
> I though some of you crafty people may have used a pressure switch in your
> cabinets with a light source to illuminate them at night. So door opens
> light comes on, close it light goes out.
>
> Could you point me in the right direction? My google skills are failing me
> today.
>
> Thanks,
> Tony
>
>