My kids are grown now, but when they were small I kept all guns locked up or under my control/on my person at all times. For bed time I had a holster attached to the back of the bed frame where it would only be accessible to me. When I got out of bed in the morning, the pistol went with me. I think a cheap or unused holster attached somewhere like the others suggested would be better than the magnet thing. Cheaper too. Brett, stainless slides are usually 400 series stainless, due to the ferrite content they are somewhat magnetic. (Just some virtually useless information)
Savage