I don't have any kids to worry about so I use a Holster Mate bed side mount. It is a 18" long metal plate that slides between your mattress & box springs and secures in place with supplied velcro pads... that you attach your belt slide holster too. When I go to bed, my Glock 23 w/ CT laser goes in the holster and is always within a short arms length.
When you make your bed, the gun will conceal easily under the bedspread if you want to leave a pistol holstered there all the time.
I got mine at Uncle Sam's in Lawton for $20.
http://www.cheaperthandirt.com/2PSHM3536-1.html
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I've been wanting one of those. I also keep a mossberg 590 fully loaded not 3ft from my bed.