I've got the same issue with a kid in the house. You want the weapon secure, but accessible if you need it. I've got a small
gun vault as others have referenced.
Personally, I've got a Glock 26 for range and HD. I use 17 rd mags with a grip extender. The other one I've been looking at is a Bersa Thunder in 45acp. I've shot a friends, and it was a nice gun at a good price.